BRPI0412060A - folha de poliolefina espumada, processo para produzì-la e produtos obtidos - Google Patents

folha de poliolefina espumada, processo para produzì-la e produtos obtidos

Info

Publication number
BRPI0412060A
BRPI0412060A BRPI0412060-4A BRPI0412060A BRPI0412060A BR PI0412060 A BRPI0412060 A BR PI0412060A BR PI0412060 A BRPI0412060 A BR PI0412060A BR PI0412060 A BRPI0412060 A BR PI0412060A
Authority
BR
Brazil
Prior art keywords
foamed
lldpe
mixtures
present
producing
Prior art date
Application number
BRPI0412060-4A
Other languages
English (en)
Inventor
Felipe Martinez
Original Assignee
Dow Global Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Global Technologies Inc filed Critical Dow Global Technologies Inc
Publication of BRPI0412060A publication Critical patent/BRPI0412060A/pt
Publication of BRPI0412060B1 publication Critical patent/BRPI0412060B1/pt

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/08Copolymers of ethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1376Foam or porous material containing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

"FOLHA DE POLIOLEFINA ESPUMADA, PROCESSO PARA PRODUZì-LA E PRODUTOS OBTIDOS". A presente invenção relaciona-se com o uso de misturas particulares de PEBDL e PDBD entre si com condições específicas de fabricação para produzir folhas espumadas de bitola fina com propriedades de corte na DM similares a uma folha não espumada equivalente da mesma composição. Em particular, misturas que combinam uma fração rica em PEBDL de alto MI com uma fração menor de PEBD ramificado de baixo MI provêem o equilíbrio adequado de resistência mecânica da base polimérica com sua resistência de fundido, extensibilidade e relaxamento de tensão, permitindo uma película de espuma fina com resistência ao corte na DM que é comparável com contrapartes não espumadas de bitola e composição similares. As películas espumadas da presente invenção são finas (geralmente de cerca de 1 a 10 mils de espessura), e têm uma resistência ao corte na DM de pelo menos cerca de 160 gramas para uma película de 3 mils se medida pela ASTM D 1922. As películas espumadas da presente invenção são preferivelmente produzidas pelo menos em parte de misturas que compreendem de 10 a 95 por cento em peso de PEBDL tendo um MI relativamente alto (1, 5 a 6) e de 5 a 90 por cento de uma resina de PEBD tendo um MI relativamente baixo (0,5 a 2,0).
BRPI0412060-4A 2003-07-07 2004-06-30 Folha de poliolefina espumada, processo para produzir uma folha espumada fina e produtos de folha espumada BRPI0412060B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US48529203P 2003-07-07 2003-07-07
US60/485,292 2003-07-07
PCT/US2004/021173 WO2005007729A1 (en) 2003-07-07 2004-06-30 Thin foamed polyethylene sheets

Publications (2)

Publication Number Publication Date
BRPI0412060A true BRPI0412060A (pt) 2006-09-05
BRPI0412060B1 BRPI0412060B1 (pt) 2014-04-22

Family

ID=34079109

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0412060-4A BRPI0412060B1 (pt) 2003-07-07 2004-06-30 Folha de poliolefina espumada, processo para produzir uma folha espumada fina e produtos de folha espumada

Country Status (17)

Country Link
US (1) US8512837B2 (pt)
EP (1) EP1646677B1 (pt)
JP (1) JP5079325B2 (pt)
KR (2) KR20120041772A (pt)
CN (2) CN100413913C (pt)
AR (1) AR045026A1 (pt)
AT (1) ATE368072T1 (pt)
AU (1) AU2004257173B2 (pt)
BR (1) BRPI0412060B1 (pt)
CA (2) CA2531557C (pt)
DE (1) DE602004007806T2 (pt)
ES (1) ES2287754T3 (pt)
MX (1) MXPA06000113A (pt)
MY (1) MY163519A (pt)
PL (1) PL1646677T3 (pt)
TW (1) TWI402301B (pt)
WO (1) WO2005007729A1 (pt)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602007003704D1 (de) 2006-03-10 2010-01-21 Dow Global Technologies Inc Polyethylenharze für folien- und wärmeformungsanwendungen
WO2008100501A2 (en) * 2007-02-13 2008-08-21 Dow Global Technologies Inc. Soft touch polyolefin foam
BRPI0913849A2 (pt) * 2008-06-20 2015-10-20 Procter & Gamble embalagem de filme espumado
US9243087B2 (en) * 2009-06-11 2016-01-26 Dow Global Technologies Llc LDPE enabling high output and good optics when blended with other polymers
EP3272665A1 (en) 2011-06-17 2018-01-24 Berry Plastics Corporation Insulated container
WO2012174568A2 (en) 2011-06-17 2012-12-20 Berry Plastics Corporation Process for forming an insulated container having artwork
AU2012363114B2 (en) 2011-06-17 2016-10-06 Berry Plastics Corporation Insulated sleeve for a cup
DE112012003070T5 (de) 2011-08-31 2014-04-30 Berry Plastics Corp. Polymermaterial für einen isolierten Behälter
US20160272798A1 (en) * 2011-09-23 2016-09-22 Exxonmobil Chemical Patents Inc. Modified Polyethylene Compositions with Enhanced Melt Strength
ES2582327T3 (es) * 2012-06-26 2016-09-12 Dow Global Technologies Llc Una composición de mezcla de polietileno adecuada para películas sopladas, y las películas hechas a partir de la misma
CA2879564A1 (en) 2012-08-07 2014-02-13 Berry Plastics Corporation Cup-forming process and machine
US10836853B2 (en) 2012-09-20 2020-11-17 Exxonmobil Chemical Patents Inc. Crack-resistant polyethylene compositions
US10822479B2 (en) * 2012-09-20 2020-11-03 Exxonmobil Chemical Patents Inc. Foamed polyethylene compositions
BR112015009329A2 (pt) 2012-10-26 2017-07-04 Berry Plastics Corp material polimérico para um recipiente isolado
AR093944A1 (es) 2012-12-14 2015-07-01 Berry Plastics Corp Troquelado para envase
AR093943A1 (es) 2012-12-14 2015-07-01 Berry Plastics Corp Reborde de un envase termico
US9840049B2 (en) 2012-12-14 2017-12-12 Berry Plastics Corporation Cellular polymeric material
US20140272229A1 (en) * 2013-03-13 2014-09-18 Raven Industries, Inc. Polyethylene foam and multilayered structure including the same
US9957365B2 (en) 2013-03-13 2018-05-01 Berry Plastics Corporation Cellular polymeric material
WO2014152631A1 (en) 2013-03-14 2014-09-25 Berry Plastics Corporation Container
FR3005661B1 (fr) 2013-05-16 2016-06-10 Novacel Sa Film adhesif sensible a la pression et son utilisation pour la protection de surfaces
EP3010964B1 (en) 2013-06-20 2018-05-02 Saudi Basic Industries Corporation Foamed film comprising polyethylene foam
US20140377512A1 (en) 2013-06-24 2014-12-25 The Procter & Gamble Company Printed Foamed Film Packaging
US20140376835A1 (en) 2013-06-24 2014-12-25 The Procter & Gamble Company Foamed Film Packaging
CN105592997A (zh) 2013-08-16 2016-05-18 比瑞塑料公司 用于绝缘容器的聚合物材料
CN105452354B (zh) 2013-08-26 2019-06-14 比瑞塑料公司 用于容器的聚合物材料
CN103694542B (zh) * 2013-12-30 2015-02-25 广州石头造环保科技有限公司 一种高填充高回弹软质发泡聚乙烯材料及其制备方法
MX393687B (es) * 2014-06-26 2025-03-11 Dow Global Technologies Llc Peliculas sopladas con tenacidad mejorada.
BR112017003381A2 (pt) 2014-08-21 2018-01-23 Dow Global Technologies Llc recipiente flexível e processo para a fabricação de um recipiente flexível
HUE069439T2 (hu) 2014-09-02 2025-03-28 Mondi Ag Ko-extrudált polietilén fólia
ES2586155T3 (es) 2014-09-02 2016-10-11 Mondi Consumer Packaging Technologies Gmbh Lámina multicapa de plástico
US9758655B2 (en) 2014-09-18 2017-09-12 Berry Plastics Corporation Cellular polymeric material
CA2964012C (en) 2014-10-21 2021-01-12 The Procter & Gamble Company Method of improving skin appearance
US10513589B2 (en) 2015-01-23 2019-12-24 Berry Plastics Corporation Polymeric material for an insulated container
US9937652B2 (en) 2015-03-04 2018-04-10 Berry Plastics Corporation Polymeric material for container
WO2016177621A1 (en) 2015-05-04 2016-11-10 Exxonmobil Chemical Patents Inc. Processes for collation shrink packaging with a thermally insulating film
EP3365066B1 (en) 2015-10-22 2019-11-20 The Procter and Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
US10272018B2 (en) 2015-10-22 2019-04-30 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
US9872816B2 (en) 2015-10-22 2018-01-23 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
CN107629280A (zh) * 2016-07-18 2018-01-26 苏州沃贝得无尘材料有限公司 一种低发泡聚乙烯膜及其制备方法
US10857076B2 (en) 2017-01-09 2020-12-08 The Procter & Gamble Company Barrier patch with soluble film and methods of improving skin appearance
US10799431B2 (en) 2017-01-09 2020-10-13 The Procter & Gamble Company Barrier patch with soluble film and methods of improving skin appearance
US10751265B2 (en) 2017-01-09 2020-08-25 The Procter & Gamble Barrier patch with soluble film and methods of improving skin appearance
CN110769945B (zh) 2017-06-22 2023-01-24 宝洁公司 包括水溶性层和气相沉积涂层的美容护理品膜
JP6961411B2 (ja) * 2017-07-20 2021-11-05 株式会社カネカ ポリエチレン系無架橋押出発泡体
US11214429B2 (en) 2017-08-08 2022-01-04 Berry Global, Inc. Insulated multi-layer sheet and method of making the same
CN109749213A (zh) * 2017-11-06 2019-05-14 阿布扎比聚合物有限公司(博禄) 发泡聚乙烯制品
CN109749214A (zh) * 2017-11-06 2019-05-14 阿布扎比聚合物有限公司(博禄) 发泡聚乙烯制品
CN107964152A (zh) * 2017-12-06 2018-04-27 东莞市和永包装有限公司 一种发泡卡板及其制备方法
CN111698984B (zh) 2018-03-19 2023-11-14 宝洁公司 制备具有可溶性膜的阻隔贴片的方法
WO2020023207A1 (en) * 2018-07-26 2020-01-30 Exxonmobil Chemical Patents Inc. Multilayer foam films and methods for making the same
CN113286703A (zh) * 2018-11-16 2021-08-20 莫塞尔挤出有限责任公司 各向异性薄聚乙烯片材及其应用以及制造其的方法
US12521921B2 (en) * 2018-11-16 2026-01-13 Mucell Extrusion, Llc Anisotropic thin foamed polyethylene sheet and applications thereof
US11376823B2 (en) 2019-05-17 2022-07-05 Mucell Extrusion, Llc Lightweight polyethylene film for aseptic packaging applications and the product resulting therefrom and the process of making the same
US11926123B2 (en) 2019-05-17 2024-03-12 Mucell Extrusion, Llc Multi-layer polymer foam film for packaging applications and the method of making the same
EP4041525A4 (en) * 2019-10-07 2023-11-01 MuCell Extrusion LLC Lightweight multilayer foam film with enhanced perceived surface whiteness
KR102336423B1 (ko) * 2020-05-20 2021-12-07 병 국 박 난연성이 우수한 배관 커버재 및 이의 제조방법
US20210395480A1 (en) * 2020-06-22 2021-12-23 Total American Services Extruded Non-Crosslinked Polyethylene Foam

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963403A (en) * 1974-12-13 1976-06-15 Hughes Processing, Inc. Apparatus for making foam plastic pipe
US4360556A (en) * 1980-03-26 1982-11-23 Owens-Illinois, Inc. Foamed low density polyethylene sheet material and carrier
US4533578A (en) * 1983-08-30 1985-08-06 Mobil Oil Corporation Sandwich foam coextrusion for high performance polyolefin trash bags
US4657811A (en) * 1983-08-30 1987-04-14 Mobil Oil Corporation High performance three layer polyolefin film
JPS6058440A (ja) * 1983-09-09 1985-04-04 Asahi Chem Ind Co Ltd 非架橋ポリエチレン低率発泡体
US4649001A (en) * 1984-04-17 1987-03-10 Japan Styrene Paper Corporation Process for producing polyethylene extruded foams
JPH0725920B2 (ja) * 1987-07-16 1995-03-22 日本スチレンペ−パ−株式会社 包装用シ−ト
JP2505517B2 (ja) * 1988-02-12 1996-06-12 積水化学工業株式会社 透湿性フィルムもしくはシ―ト用樹脂組成物並びに透湿性フィルムもしくはシ―ト及びその製造方法
US5000992A (en) * 1989-06-01 1991-03-19 The Dow Chemical Company Coextruded multilayer foamed film for plastic container closures and process for manufacture
US5286525A (en) * 1992-02-06 1994-02-15 Witco Corporation Method of improving the printing of polyolefins with water-based inks
JP3468886B2 (ja) 1994-10-14 2003-11-17 丸善工業株式会社 発泡チューブラーフィルム、その製法および物品包装用袋
ES2121435T3 (es) * 1994-11-22 1998-11-16 Dow Chemical Co Composicion util para articulos elastomericos y articulos preparados a partir de la composicion.
US6114025A (en) * 1998-06-15 2000-09-05 Tenneco Protective Packaging, Inc. Foam and film/foam laminates using linear low density polyethylene
US6096793A (en) * 1998-12-22 2000-08-01 Sealed Air Corporation Foam comprising polyolefin blend and method for producing same
JP2003535175A (ja) * 2000-05-26 2003-11-25 ダウ グローバル テクノロジーズ インコーポレイテッド ポリエチレンリッチ/ポリプロピレンブレンドおよびその用途
US6545094B2 (en) * 2001-03-09 2003-04-08 The Dow Chemical Company Blends of ethylenic polymers with improved modulus and melt strength and articles fabricated from these blends
GB2395948A (en) 2002-12-06 2004-06-09 Pactiv Europ B V Polyolefin foam
DE202005002615U1 (de) 2004-02-27 2005-05-19 Rkw Ag Rheinische Kunststoffwerke Dünnfolien mit niedriger Dichte

Also Published As

Publication number Publication date
ATE368072T1 (de) 2007-08-15
CN101323676A (zh) 2008-12-17
TWI402301B (zh) 2013-07-21
CA2531557A1 (en) 2005-01-27
US8512837B2 (en) 2013-08-20
BRPI0412060B1 (pt) 2014-04-22
EP1646677B1 (en) 2007-07-25
MXPA06000113A (es) 2006-04-07
US20080138593A1 (en) 2008-06-12
CN101323676B (zh) 2013-03-27
CN1820042A (zh) 2006-08-16
KR20060041215A (ko) 2006-05-11
KR101287732B1 (ko) 2013-07-18
TW200505972A (en) 2005-02-16
AR045026A1 (es) 2005-10-12
AU2004257173A1 (en) 2005-01-27
JP5079325B2 (ja) 2012-11-21
CA2787084A1 (en) 2005-01-27
EP1646677A1 (en) 2006-04-19
PL1646677T3 (pl) 2007-12-31
DE602004007806D1 (de) 2007-09-06
KR20120041772A (ko) 2012-05-02
CA2531557C (en) 2013-02-19
ES2287754T3 (es) 2007-12-16
CA2787084C (en) 2015-03-17
JP2007527449A (ja) 2007-09-27
MY163519A (en) 2017-09-15
AU2004257173B2 (en) 2009-12-10
DE602004007806T2 (de) 2008-04-17
WO2005007729A1 (en) 2005-01-27
CN100413913C (zh) 2008-08-27

Similar Documents

Publication Publication Date Title
BRPI0412060A (pt) folha de poliolefina espumada, processo para produzì-la e produtos obtidos
BRPI0417111A (pt) composição termoplástica, artigo de manufatura e método para prepará-lo
EP0313653B1 (en) Foams of polyolefin/polystyrene resin mixture
JP2004505799A (ja) 布様ポリマーフィルム
BRPI0518211A (pt) embalagem e método de embalagem de massa plástica
KR20120103697A (ko) 우수한 인장 및 다트 특성을 갖는 광분해성 필름
CN104416987A (zh) 一种低厚度的聚乙烯热收缩膜
JP3380043B2 (ja) 食品包装用ストレツチフイルム
BR0115299A (pt) Misturas de borracha contendo géis com peróxidos inorg nicos
BRPI0412702A (pt) laminado para acondicionamento com barreira de gás, recipiente para acondicionamento, e, método de manufatura de um laminado para acondiconamento
CA3009192C (en) Film for packaging
KR101555073B1 (ko) 전자 부품 포장용 시트
BR112017015999A2 (pt) composição espumável, espuma, e, método para preparar a mesma.
JP2020193274A (ja) ポリスチレン系樹脂組成物、その樹脂シート及びその樹脂成形体
BRPI0417317A (pt) pelìcula esticável tendo três ou mais camadas
BR9915156A (pt) Composições de resinas termoplásticas, processo para produção de composição de resina termoplástica, e, mistura de cargas para uso em composições de resina termoplástica.
BR0208671A (pt) Bloco de metal apropriado para uso em aplicações de usinagem, e, métodos para fabricar o bloco, componentes estruturais de aeronaves, moldes de injeção para plásticos ou borracha, e peças usinadas
JP2002331626A (ja) 易引裂性多層フィルム
BR112022025742A2 (pt) Composição de polipropileno para lâmina de espuma hms-pp com resistência à flexão equilibrada
US7365117B2 (en) Polyethylene formulations
KR20070000347A (ko) 이열성 연신 필름, 이열성 라미네이트 필름, 이열성 자루,및 이열성 연신 필름의 제조 방법
US20250289944A1 (en) Composition for packaging film
JP2007039664A (ja) 易裂性延伸フィルム、易裂性ラミネートフィルム、易裂性袋、及び易裂性延伸フィルムの製造方法
CN110234702B (zh) 氯乙烯树脂组合物、氯乙烯树脂成型体及层叠体
Radosta et al. Treated talc as an effective anti-block for LDPE blown film

Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/06/2004, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 30/06/2024