JPH10337479A - ハニカム型触媒及びその製造方法 - Google Patents
ハニカム型触媒及びその製造方法Info
- Publication number
- JPH10337479A JPH10337479A JP9149144A JP14914497A JPH10337479A JP H10337479 A JPH10337479 A JP H10337479A JP 9149144 A JP9149144 A JP 9149144A JP 14914497 A JP14914497 A JP 14914497A JP H10337479 A JPH10337479 A JP H10337479A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- honeycomb
- irregularities
- wall
- roller
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
- B28B3/269—For multi-channeled structures, e.g. honeycomb structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
- B01J35/57—Honeycombs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12333—Helical or with helical component
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24744—Longitudinal or transverse tubular cavity or cell
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
媒及びその製造方法を提供すること。 【解決手段】 ハニカム孔内の触媒内壁に凹凸が形成さ
れてなることを特徴とするハニカム型触媒及び押出し成
型法によるハニカム型触媒の製造方法において、ハニカ
ム孔内の触媒内壁に凹凸を付与する手段を備えた金型を
用いて押出し成型することを特徴とするハニカム型触媒
の製造方法。
Description
その製造方法、さらに詳しくはガスとの接触効率が改良
されたハニカム型触媒及びその製造方法に関する。
るハニカム型触媒は、ガスを流通・接触させる際に低い
圧力損失を維持できること、また、ダストが共存するガ
スの処理において目詰まりを回避できることから、各種
燃料のボイラ排ガスやガスタービン排ガスの脱硝触媒、
あるいは自動車排ガスの処理用触媒など各種ガス反応用
触媒として広く使用されている。ここで使用されるハニ
カム型触媒は、従来は例えば脱硝触媒の場合、触媒原料
であるTiO2 粉に活性成分であるV、Mo、Wなどの
化合物の溶液と、有機バインダ、無機バインダを混合、
混練して粘土状の物質とし、例えば図4に示したような
金型10を装着した押出成型機を用いて、格子状の開口
部を有する成型物を得ている。図4(a)は正面図、図
4(b)は(a)のA−A断面図である。図4において
触媒成分を含む粘土状物質が図4(b)のB側からC側
に向かって、粘土状物質通過孔12を通ってハニカム形
状を形成する口金先端部11の隙間から押し出され、四
角形の孔の開いたハニカム型の成型物となる。図4中、
符号13は口金10を押出機に取付けるためのボルト
穴、14は外枠となるダイを取付けるためのボルト穴で
ある。
のような優れた構造的特徴を有するものであるが、さら
に効率的なガス反応あるいはガス処理を行うため、ガス
との接触効率が改良されたハニカム型触媒が要求されて
いる。本発明はこのような従来技術に鑑み、ガスとの接
触効率が改良されたハニカム型触媒及びその製造方法を
提供することを目的とする。
解決するためにハニカム型触媒を用いた反応の反応速度
について鋭意検討の結果、触媒単位体積当たりのガス接
触面積及びハニカム壁面への反応物質の移動速度が重要
な因子となっており、触媒性能を有効に発揮させるため
には、接触面積の増大とハニカム孔内でのガス流れを乱
して、反応物質の壁面への移動速度を増大させるのが効
果的であることを見出し、本発明を完成するに至った。
触媒内壁に凹凸が形成されてなることを特徴とするハニ
カム型触媒、及び(2)押出し成型法によるハニカム型
触媒の製造方法において、ハニカム孔内の触媒内壁に凹
凸を付与する手段を備えた金型を用いて押出し成型する
ことを特徴とするハニカム型触媒の製造方法である。
ボイラ排ガスやガスタービン排ガスの脱硝触媒、あるい
は自動車排ガスの処理用触媒など各種ガス反応用触媒と
して広く適用可能なものであるが、特に燃焼排ガス中に
含まれる窒素酸化物の還元除去、あるいは未燃の一酸化
炭素や炭化水素の除去などの分野で使用される触媒とし
て有用なものである。
型を用いて成型したハニカム型触媒ではハニカム孔内の
壁面は平滑である。そのため、通常は触媒に接触させる
ガスは流れを乱すことなくハニカム孔内を通過する。こ
れに対し、本発明のハニカム型触媒はハニカム孔内の触
媒内壁に凹凸が形成されているため、成型触媒の単位体
積当たりのガス接触面積が増大し、触媒としての性能が
向上している。特に後述の図1又は図2に示した金型を
用いて成型したもののように、ガスの流路の断面積がガ
スの進行方向で変化するように凹凸が形成されている場
合には、ハニカム孔内でのガス流れの乱れが増大し、ガ
ス境膜での反応物質の移動速度の増大につながることに
なり、触媒性能性能の向上効果が大きくなる。
形成されたハニカム型触媒は、触媒構成原料を成型助剤
やバインダ成分等と混練して押出し成型可能とした押出
し原料(混練物)を、ハニカム孔内の触媒内壁に凹凸を
付与する手段を備えた金型を用いて押出し成型すること
によって製造することができる。以下、図面を用いて本
発明をさらに詳細に説明する。
の1例について、その先端の一部を拡大して示す説明図
であり、図1(a)は正面図、図1(b)は側面図であ
る。図1の金型は先端部の口金1に、表面に適当なピッ
チで凹凸を形成させたローラ2をローラ支柱3により装
着したもので、図のAの方向から押し出される混練物
が、出口Bにおいてローラ2に接触し、ローラ2の回転
に伴って成型触媒の孔の内壁にローラ2の表面に形成さ
れた凹凸に対応した凹凸が形成されるようになってい
る。
の他の1例について、その先端の一部を拡大して示す説
明図であり、図2(a)は正面図、図2(b)は側面図
である。図2の金型は先端部の口金1に、一定の周期で
振動する振動子4を取付けたもので、図のAの方向から
押し出される混練物に、出口Bにおいて振動子4が接触
し、押しつけられて成型触媒の孔の内壁に凹凸が形成さ
れるようになっている。
の他の1例について、その先端の一部を拡大して示す説
明図であり、図3(a)は正面図、図3(b)は側面図
である。図3の金型は先端部の口金1に、縁部にギザギ
ザのある補助板5を取付けたもので、補助板5によって
口金1の断面形状が修正された形となり、図のAの方向
から押し出される混練物が、出口Bから補助板5の形状
に応じた断面形状で押し出され、成型触媒の孔の内壁に
ガスの流過方向に平行な凹凸が形成されるようになって
いる。図3中の符号6は補助板5を口金1の先端に取付
けるためのネジを示す。
が形成されたハニカム型触媒は、孔内を流過するガスと
の接触面積が大きく、また、孔内でガスの流れが乱され
る効果があり、従来のハニカム型触媒に比較して触媒と
反応ガスとの接触効率がよく、高い触媒性能を示す。ま
た、本発明のハニカム孔内の触媒内壁に凹凸を付与する
手段を備えた金型を用いて押出し成型する方法によれ
ば、前記の触媒内壁に凹凸が形成され、触媒性能の向上
したハニカム型触媒を容易に製造することができる。
いて、その先端の一部を拡大して示す説明図。
について、その先端の一部を拡大して示す説明図。
について、その先端の一部を拡大して示す説明図。
を示す説明図。
Claims (2)
- 【請求項1】 ハニカム孔内の触媒内壁に凹凸が形成さ
れてなることを特徴とするハニカム型触媒。 - 【請求項2】 押出し成型法によるハニカム型触媒の製
造方法において、ハニカム孔内の触媒内壁に凹凸を付与
する手段を備えた金型を用いて押出し成型することを特
徴とするハニカム型触媒の製造方法。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14914497A JP4220584B2 (ja) | 1997-06-06 | 1997-06-06 | ハニカム型触媒の製造方法 |
| US09/067,631 US6156698A (en) | 1997-06-06 | 1998-04-28 | Honeycomb catalyst and manufacturing method therefor |
| DK98108150T DK0882505T3 (da) | 1997-06-06 | 1998-05-05 | Fremgangsmåde til fremstilling af en cellekatalysator |
| EP98108150A EP0882505B1 (en) | 1997-06-06 | 1998-05-05 | Manufacturing method for honeycomb catalysts |
| DE69810992T DE69810992T2 (de) | 1997-06-06 | 1998-05-05 | Verfahren zur Herstellung eines Wabenkörper-Katalysators |
| AT98108150T ATE231741T1 (de) | 1997-06-06 | 1998-05-05 | Verfahren zur herstellung eines wabenkörper- katalysators |
| KR1019980019846A KR100278897B1 (ko) | 1997-06-06 | 1998-05-29 | 하니콤형촉매및그제조방법 |
| CA002239700A CA2239700C (en) | 1997-06-06 | 1998-06-05 | Honeycomb catalyst and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14914497A JP4220584B2 (ja) | 1997-06-06 | 1997-06-06 | ハニカム型触媒の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10337479A true JPH10337479A (ja) | 1998-12-22 |
| JP4220584B2 JP4220584B2 (ja) | 2009-02-04 |
Family
ID=15468737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14914497A Expired - Lifetime JP4220584B2 (ja) | 1997-06-06 | 1997-06-06 | ハニカム型触媒の製造方法 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6156698A (ja) |
| EP (1) | EP0882505B1 (ja) |
| JP (1) | JP4220584B2 (ja) |
| KR (1) | KR100278897B1 (ja) |
| AT (1) | ATE231741T1 (ja) |
| CA (1) | CA2239700C (ja) |
| DE (1) | DE69810992T2 (ja) |
| DK (1) | DK0882505T3 (ja) |
Families Citing this family (65)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD442612S1 (en) | 2000-04-17 | 2001-05-22 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD444487S1 (en) | 2000-04-17 | 2001-07-03 | Jmp Industries, Inc. | Diamond shape extruder insert |
| DE10024038A1 (de) * | 2000-05-13 | 2001-11-22 | Dmc2 Degussa Metals Catalysts | Wabenkörper aus einem keramischen Material mit verbesserter radialer Druckfestigkeit |
| USD446794S1 (en) | 2000-09-20 | 2001-08-21 | Jmp Industries, Inc. | Mesh ring extruder die |
| USD450732S1 (en) | 2001-02-16 | 2001-11-20 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD452257S1 (en) | 2001-07-25 | 2001-12-18 | J M P Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD472252S1 (en) | 2002-02-01 | 2003-03-25 | Jmp Industries, Inc. | Mesh ring extruder die |
| USD469117S1 (en) | 2002-02-04 | 2003-01-21 | Jmp Industries, Inc. | Diamond shape extruder insert |
| USD469452S1 (en) | 2002-02-04 | 2003-01-28 | Jmp Industries, Inc. | Diamond shape extruder insert |
| USD470869S1 (en) | 2002-04-09 | 2003-02-25 | Jmp Industries, Inc. | Diamond shape extruder insert |
| USD469453S1 (en) | 2002-04-09 | 2003-01-28 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD470870S1 (en) | 2002-04-09 | 2003-02-25 | Jmp Industries, Inc. | Diamond shape extruder insert |
| USD469454S1 (en) | 2002-04-09 | 2003-01-28 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD469116S1 (en) | 2002-04-09 | 2003-01-21 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| US7574796B2 (en) | 2002-10-28 | 2009-08-18 | Geo2 Technologies, Inc. | Nonwoven composites and related products and methods |
| US7572311B2 (en) | 2002-10-28 | 2009-08-11 | Geo2 Technologies, Inc. | Highly porous mullite particulate filter substrate |
| US7582270B2 (en) | 2002-10-28 | 2009-09-01 | Geo2 Technologies, Inc. | Multi-functional substantially fibrous mullite filtration substrates and devices |
| US6946013B2 (en) | 2002-10-28 | 2005-09-20 | Geo2 Technologies, Inc. | Ceramic exhaust filter |
| USD485286S1 (en) | 2003-01-07 | 2004-01-13 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| US8580211B2 (en) * | 2003-05-16 | 2013-11-12 | Velocys, Inc. | Microchannel with internal fin support for catalyst or sorption medium |
| USD494198S1 (en) | 2003-08-29 | 2004-08-10 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| USD497376S1 (en) | 2003-08-29 | 2004-10-19 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| US9023900B2 (en) | 2004-01-28 | 2015-05-05 | Velocys, Inc. | Fischer-Tropsch synthesis using microchannel technology and novel catalyst and microchannel reactor |
| US7084180B2 (en) * | 2004-01-28 | 2006-08-01 | Velocys, Inc. | Fischer-tropsch synthesis using microchannel technology and novel catalyst and microchannel reactor |
| US8186991B2 (en) | 2004-02-27 | 2012-05-29 | Jmp Industries, Inc. | Extruder system and cutting assembly |
| USD544005S1 (en) | 2006-07-14 | 2007-06-05 | James M. Pinchot | Extruder insert |
| USD523452S1 (en) | 2004-06-01 | 2006-06-20 | James M. Pinchot | Extruder plate for diamond shaped extruder insert |
| US7682578B2 (en) | 2005-11-07 | 2010-03-23 | Geo2 Technologies, Inc. | Device for catalytically reducing exhaust |
| US7682577B2 (en) | 2005-11-07 | 2010-03-23 | Geo2 Technologies, Inc. | Catalytic exhaust device for simplified installation or replacement |
| US7211232B1 (en) | 2005-11-07 | 2007-05-01 | Geo2 Technologies, Inc. | Refractory exhaust filtering method and apparatus |
| USD534562S1 (en) | 2005-11-10 | 2007-01-02 | James M. Pinchot | Extruder plate for diamond shaped extruder insert |
| US7722828B2 (en) | 2005-12-30 | 2010-05-25 | Geo2 Technologies, Inc. | Catalytic fibrous exhaust system and method for catalyzing an exhaust gas |
| US7444805B2 (en) | 2005-12-30 | 2008-11-04 | Geo2 Technologies, Inc. | Substantially fibrous refractory device for cleaning a fluid |
| USD531197S1 (en) | 2006-01-27 | 2006-10-31 | Jmp Industries, Inc. | Extruder plate for diamond shaped extruder insert |
| US7563415B2 (en) | 2006-03-03 | 2009-07-21 | Geo2 Technologies, Inc | Catalytic exhaust filter device |
| USD565610S1 (en) | 2007-03-21 | 2008-04-01 | Jmp Industries, Inc. | Extruder plate for generally triangular shaped extruder inserts |
| USD564549S1 (en) | 2007-03-21 | 2008-03-18 | Jmp Industries, Inc. | Extruder insert |
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| USD573616S1 (en) | 2007-03-21 | 2008-07-22 | Jmp Industries, Inc. | Extruder insert |
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| GB201214122D0 (en) | 2012-08-07 | 2012-09-19 | Oxford Catalysts Ltd | Treating of catalyst support |
| GB2554618B (en) | 2015-06-12 | 2021-11-10 | Velocys Inc | Synthesis gas conversion process |
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- 1998-04-28 US US09/067,631 patent/US6156698A/en not_active Expired - Lifetime
- 1998-05-05 AT AT98108150T patent/ATE231741T1/de not_active IP Right Cessation
- 1998-05-05 EP EP98108150A patent/EP0882505B1/en not_active Expired - Lifetime
- 1998-05-05 DE DE69810992T patent/DE69810992T2/de not_active Expired - Lifetime
- 1998-05-05 DK DK98108150T patent/DK0882505T3/da active
- 1998-05-29 KR KR1019980019846A patent/KR100278897B1/ko not_active Expired - Fee Related
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| JPS61167798A (ja) * | 1985-01-21 | 1986-07-29 | 日本碍子株式会社 | セラミツクハニカム構造体 |
| JPH022683B2 (ja) * | 1986-03-29 | 1990-01-19 | Nippon Gaishi Kk | |
| JPH0560404B2 (ja) * | 1986-06-17 | 1993-09-02 | Ngk Insulators Ltd | |
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| JPS63178130U (ja) * | 1987-03-13 | 1988-11-17 | ||
| JPH0813337B2 (ja) * | 1989-11-04 | 1996-02-14 | 日本碍子株式会社 | セラミックハニカム構造体およびその製造方法 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4220584B2 (ja) | 2009-02-04 |
| KR100278897B1 (ko) | 2001-01-15 |
| KR19990006519A (ko) | 1999-01-25 |
| CA2239700C (en) | 2001-07-31 |
| EP0882505B1 (en) | 2003-01-29 |
| US6156698A (en) | 2000-12-05 |
| EP0882505A2 (en) | 1998-12-09 |
| CA2239700A1 (en) | 1998-12-06 |
| EP0882505A3 (en) | 1999-04-14 |
| DE69810992D1 (de) | 2003-03-06 |
| DK0882505T3 (da) | 2003-05-26 |
| ATE231741T1 (de) | 2003-02-15 |
| DE69810992T2 (de) | 2003-08-21 |
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