NL1004210C2 - Waterfiltratie-inrichting. - Google Patents

Waterfiltratie-inrichting. Download PDF

Info

Publication number
NL1004210C2
NL1004210C2 NL1004210A NL1004210A NL1004210C2 NL 1004210 C2 NL1004210 C2 NL 1004210C2 NL 1004210 A NL1004210 A NL 1004210A NL 1004210 A NL1004210 A NL 1004210A NL 1004210 C2 NL1004210 C2 NL 1004210C2
Authority
NL
Netherlands
Prior art keywords
membranes
capillary
water
filtration device
membrane
Prior art date
Application number
NL1004210A
Other languages
English (en)
Dutch (nl)
Inventor
Johan Jan Scharstuhl
Original Assignee
Prime Water Systems N V
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19763630&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NL1004210(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Prime Water Systems N V filed Critical Prime Water Systems N V
Priority to NL1004210A priority Critical patent/NL1004210C2/nl
Priority to US08/735,146 priority patent/US5895573A/en
Priority to AU44026/97A priority patent/AU4402697A/en
Priority to ES97942301T priority patent/ES2219776T3/es
Priority to AT97942301T priority patent/ATE258078T1/de
Priority to CA002268161A priority patent/CA2268161C/en
Priority to DE69727310T priority patent/DE69727310T2/de
Priority to CN97198576A priority patent/CN1122561C/zh
Priority to PCT/NL1997/000544 priority patent/WO1998015342A1/en
Priority to EP97942301A priority patent/EP0938367B1/de
Publication of NL1004210C2 publication Critical patent/NL1004210C2/nl
Application granted granted Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/024—Hollow fibre modules with a single potted end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/04—Backflushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/08—Use of hot water or water vapor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/20—By influencing the flow
    • B01D2321/2008—By influencing the flow statically
    • B01D2321/2016—Static mixers; Turbulence generators

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Organic Insulating Materials (AREA)
  • Filtering Materials (AREA)
NL1004210A 1996-10-07 1996-10-07 Waterfiltratie-inrichting. NL1004210C2 (nl)

Priority Applications (10)

Application Number Priority Date Filing Date Title
NL1004210A NL1004210C2 (nl) 1996-10-07 1996-10-07 Waterfiltratie-inrichting.
US08/735,146 US5895573A (en) 1996-10-07 1996-10-22 Ultrafiltration device for domestic/drinking water purification
AT97942301T ATE258078T1 (de) 1996-10-07 1997-09-30 Wasserfiltriergerät
ES97942301T ES2219776T3 (es) 1996-10-07 1997-09-30 Dispositivo para el filtrado de agua.
AU44026/97A AU4402697A (en) 1996-10-07 1997-09-30 Water filtration device and method of its manufacture
CA002268161A CA2268161C (en) 1996-10-07 1997-09-30 Water filtration device and method of its manufacture
DE69727310T DE69727310T2 (de) 1996-10-07 1997-09-30 Wasserfiltriergerät
CN97198576A CN1122561C (zh) 1996-10-07 1997-09-30 水过滤装置及其制造方法
PCT/NL1997/000544 WO1998015342A1 (en) 1996-10-07 1997-09-30 Water filtration device and method of its manufacture
EP97942301A EP0938367B1 (de) 1996-10-07 1997-09-30 Wasserfiltriergerät

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1004210 1996-10-07
NL1004210A NL1004210C2 (nl) 1996-10-07 1996-10-07 Waterfiltratie-inrichting.

Publications (1)

Publication Number Publication Date
NL1004210C2 true NL1004210C2 (nl) 1998-04-10

Family

ID=19763630

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1004210A NL1004210C2 (nl) 1996-10-07 1996-10-07 Waterfiltratie-inrichting.

Country Status (10)

Country Link
US (1) US5895573A (de)
EP (1) EP0938367B1 (de)
CN (1) CN1122561C (de)
AT (1) ATE258078T1 (de)
AU (1) AU4402697A (de)
CA (1) CA2268161C (de)
DE (1) DE69727310T2 (de)
ES (1) ES2219776T3 (de)
NL (1) NL1004210C2 (de)
WO (1) WO1998015342A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1015384C2 (nl) * 2000-06-06 2001-12-10 Prime Water Systems Gmbh Waterfiltratie-inrichting.

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004210C2 (nl) 1996-10-07 1998-04-10 Prime Water Systems N V Waterfiltratie-inrichting.
CA2393774A1 (en) * 1999-12-08 2001-06-14 Aqua Research Pty Ltd Drinking element
WO2002018037A2 (en) * 2000-08-31 2002-03-07 Millipore Corporation Gas vent filter construction incorporating a hollow fiber membrane assembly
US20040112826A1 (en) * 2000-12-08 2004-06-17 Akira Chiba Drinking element
DE60220989T2 (de) * 2001-02-05 2008-03-13 Millipore Corp., Billerica Detektion von mikroorganismen
NL1017681C2 (nl) * 2001-03-23 2002-10-10 Prime Water Systems Gmbh Filtersysteem.
US6846588B2 (en) * 2002-01-16 2005-01-25 Alberta Research Council Inc. Hollow inorganic membranes produced by metal or composite electrodeposition
US6824907B2 (en) * 2002-01-16 2004-11-30 Alberta Reasearch Council, Inc. Tubular solid oxide fuel cell stack
US7736772B2 (en) * 2002-02-14 2010-06-15 Alberta Research Council, Inc. Tubular solid oxide fuel cell stack
GB2387130A (en) * 2002-04-04 2003-10-08 Fluid Technologies Plc Hollow fibre filter membrane unit with microorganism detector, and associated usage
NL1020607C2 (nl) * 2002-05-15 2003-11-18 Prime Water Systems Gmbh Vloeistofdoorstroominrichting.
DE10327988B4 (de) * 2002-12-18 2009-05-14 Alpha Plan Gmbh Filtermodul zur Aufbereitung von Flüssigkeiten
US20060249440A1 (en) * 2004-07-30 2006-11-09 Adam Kaminski Collapsible process tank for a water purification system
CN101035863A (zh) * 2004-10-04 2007-09-12 索维高级聚合物股份有限公司 砜聚合物组合物
EP1802704B1 (de) * 2004-10-04 2014-11-12 Solvay Specialty Polymers USA, LLC. Hochleistungsfähige membranen, herstellungsverfahren dafür und verwendung davon
US8709674B2 (en) * 2005-04-29 2014-04-29 Alberta Research Council Inc. Fuel cell support structure
ITPR20060062A1 (it) * 2006-07-03 2008-01-04 Cft Spa Sistema per creare una barriera sterile e lubrificare e/o refrigerare parti mobili in impianti di sterilizzazione uht.
WO2008026079A2 (en) * 2006-07-21 2008-03-06 Saxonia Bio Tec Gmbh Method and apparatus related to liquid filtration systems
WO2009087570A2 (es) * 2008-01-09 2009-07-16 Pedro Hernan Vega Ortiz Sistema para ahorrar y purificar agua via grifo
AU2009207824B2 (en) * 2008-01-24 2013-11-21 Société des Produits Nestlé S.A. Capsule with integrated antimicrobial filter
US7473362B1 (en) * 2008-02-21 2009-01-06 Nohren Jr John E Water treatment system
AP2012006363A0 (en) 2009-12-18 2012-08-31 Vestergaard Frandsen Sa Drinking straw with hollow fibre liquid filter
DE202009019064U1 (de) 2009-12-18 2016-03-01 Lifestraw Sa Trinkhalm mit Hohlfaserflüssigkeitsfilter
US8678201B2 (en) * 2010-06-04 2014-03-25 Goodrich Corporation Aircraft potable water system
US9266066B2 (en) * 2011-12-13 2016-02-23 Pall Corporation Membrane with localized asymmetries
ES2540574B2 (es) * 2013-11-22 2015-10-23 Universidad De Cádiz Dispositivo de muestreo extraíble para la realización de autopsias no destructivas en membranas de configuración espiral
KR102140264B1 (ko) 2013-12-20 2020-07-31 주식회사 엘지화학 중공사막
USD764019S1 (en) * 2015-02-20 2016-08-16 Kubota Corporation Filter
EP3115099B1 (de) 2015-07-07 2019-09-04 I3 Membrane GmbH Verfahren zur elektrofiltration und elektro-sorption mittels einer metallbeschichteten polymermembran und vorrichtung dafür
USD783773S1 (en) 2015-07-14 2017-04-11 Lifestraw Sa Water purifier
USD782609S1 (en) 2015-07-14 2017-03-28 Lifestraw Sa Water purifier
USD782610S1 (en) 2015-11-09 2017-03-28 Lifestraw Sa Water purifier
DE102015015159A1 (de) * 2015-11-25 2017-06-01 Krallmann Kunststoffverarbeitung Gmbh Rohrförmiges Filtermembran-Element und Verfahren zu seiner Herstellung
ITUA20161826A1 (it) * 2016-03-18 2017-09-18 Sol Spa Dispositivo e metodo per la separazione di gas tramite membrane a forma tubolare.
FR3070874B1 (fr) 2017-09-14 2022-04-22 Black Hole Lab Dispositif fluidique d'assainissement d'un fluide et procede d'assainissement associe
GB2573352A (en) 2018-05-03 2019-11-06 Pak Vitae Private Ltd Hollow fiber membrane for filtration of liquids

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036315A2 (de) * 1980-03-14 1981-09-23 Memtec America Corporation Anisotrope Membranen
JPS63287593A (ja) * 1987-05-19 1988-11-24 Toray Ind Inc ストロ−型清水器
EP0305787A1 (de) * 1987-08-31 1989-03-08 GAMBRO DIALYSATOREN GMBH & CO. KG Verfahren zur Herstellung einer permselektiven, asymmetrischen Membrane, verwendbar in der Hämodialyse und die so hergestellten Membrane
EP0395133A1 (de) * 1989-04-28 1990-10-31 X-Flow B.V. Verfahren zur Herstellung einer mikroporösen Membran und eine solche Membran
US4980056A (en) * 1989-08-04 1990-12-25 Culligan International Company Faucet-mounted microbial filter
WO1991005600A1 (en) * 1989-10-17 1991-05-02 Cuno Incorporated Filter device with radial and axial flow subassemblies
US5102542A (en) * 1990-01-25 1992-04-07 Electrolux Water Systems, Inc. Construction of canister-type filters
JPH04326980A (ja) * 1991-04-26 1992-11-16 Kyoritsu House Hiile Kk 浄水器
JPH05309239A (ja) * 1992-05-11 1993-11-22 Nitto Denko Corp 中空糸膜分離装置
JPH0691256A (ja) * 1992-09-17 1994-04-05 Mitsubishi Rayon Co Ltd 携帯用簡易浄水器セット
EP0673672A2 (de) * 1994-03-25 1995-09-27 Nissho Corporation Vorrichtung zur Behandlung von Flüssigkeiten
JPH08215678A (ja) * 1995-02-16 1996-08-27 Mitsubishi Rayon Co Ltd 浄水器

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276249A (en) * 1979-09-26 1981-06-30 Monsanto Company Processes for sealing hollow fiber membranes arranged in the form of a bundle
CA1221645A (en) * 1983-02-28 1987-05-12 Yoshihiro Okano Filtration apparatus using hollow fiber-membrane
EP0138060B1 (de) * 1983-09-16 1990-03-07 Mitsubishi Rayon Co., Ltd. Hohlfaser-Filtermodul und seine Verwendung in einer Wasserreinigungsvorrichtung
US4668401A (en) * 1985-06-19 1987-05-26 Mitsubishi Rayon Co., Ltd. Hollow-fiber filter module and filtration method using the same
JPS62136293U (de) * 1986-02-20 1987-08-27
NL8602402A (nl) * 1986-09-23 1988-04-18 X Flow Bv Werkwijze voor de vervaardiging van hydrofiele membranen en dergelijke membranen.
US4798672A (en) * 1987-07-24 1989-01-17 Knight Val R Charcoal water filter/strainer
NL8800796A (nl) * 1988-03-29 1989-10-16 X Flow Bv Werkwijze voor de chemische analyse van bestanddelen van een lichaamsvloeistof, alsmede een testinrichting en testpakket voor een dergelijke analyse.
WO1991010622A1 (fr) * 1988-06-28 1991-07-25 Ube Industries, Ltd. Epurateur d'eau
JPH0251648A (ja) * 1988-08-11 1990-02-21 Aisin Aw Co Ltd 自動変速機における油路構造
US5045198A (en) * 1989-08-04 1991-09-03 Culligan International Company Faucet-mounted microbial filter
US5156335A (en) * 1989-09-05 1992-10-20 Smith Michael L Filtered drinking straw
US5037547A (en) * 1989-10-13 1991-08-06 Burrows Bruce D Dual stage filter cartridge for a reverse osmosis purification system
US5221473A (en) * 1989-10-13 1993-06-22 Burrows Bruce D Filter cartridge assembly for a reverse osmosis purification system
US5139668A (en) * 1989-12-27 1992-08-18 Alberta Research Corporation Hollow fiber bundle element
US4995976A (en) * 1990-05-31 1991-02-26 Water Technologies Corporation Water purification straw
US5100555A (en) * 1990-06-15 1992-03-31 Matson Stephen L Method and system for removing radon from radon containing water
JP2858913B2 (ja) * 1990-09-26 1999-02-17 オルガノ株式会社 中空糸膜を用いる濾過方法
US5225079A (en) * 1991-08-01 1993-07-06 Nok Corporation Modular hollow-fiber filter unit
US5173178A (en) * 1991-09-24 1992-12-22 Osaki Electric Co., Ltd. Water purifying apparatus with timed discharge after non-use periods
US5290443A (en) * 1991-10-24 1994-03-01 Culligan International Co. Faucet with microbial filter
JP3059277B2 (ja) * 1991-11-18 2000-07-04 日東電工株式会社 外圧型中空糸膜モジュ−ル
JP3217842B2 (ja) * 1992-03-03 2001-10-15 旭化成株式会社 中空糸状高性能精密濾過膜
NL9301653A (nl) * 1993-09-24 1995-04-18 X Flow Bv Werkwijze voor het verwijderen van troebelheid veroorzakende bestanddelen uit een vloeistof met behulp van microfiltratie.
US5518613A (en) * 1994-12-14 1996-05-21 Harrison First International, Inc. Portable water purifying and drinking device
NL1004210C2 (nl) 1996-10-07 1998-04-10 Prime Water Systems N V Waterfiltratie-inrichting.

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036315A2 (de) * 1980-03-14 1981-09-23 Memtec America Corporation Anisotrope Membranen
JPS63287593A (ja) * 1987-05-19 1988-11-24 Toray Ind Inc ストロ−型清水器
EP0305787A1 (de) * 1987-08-31 1989-03-08 GAMBRO DIALYSATOREN GMBH & CO. KG Verfahren zur Herstellung einer permselektiven, asymmetrischen Membrane, verwendbar in der Hämodialyse und die so hergestellten Membrane
EP0395133A1 (de) * 1989-04-28 1990-10-31 X-Flow B.V. Verfahren zur Herstellung einer mikroporösen Membran und eine solche Membran
US4980056A (en) * 1989-08-04 1990-12-25 Culligan International Company Faucet-mounted microbial filter
WO1991005600A1 (en) * 1989-10-17 1991-05-02 Cuno Incorporated Filter device with radial and axial flow subassemblies
US5102542A (en) * 1990-01-25 1992-04-07 Electrolux Water Systems, Inc. Construction of canister-type filters
JPH04326980A (ja) * 1991-04-26 1992-11-16 Kyoritsu House Hiile Kk 浄水器
JPH05309239A (ja) * 1992-05-11 1993-11-22 Nitto Denko Corp 中空糸膜分離装置
JPH0691256A (ja) * 1992-09-17 1994-04-05 Mitsubishi Rayon Co Ltd 携帯用簡易浄水器セット
EP0673672A2 (de) * 1994-03-25 1995-09-27 Nissho Corporation Vorrichtung zur Behandlung von Flüssigkeiten
JPH08215678A (ja) * 1995-02-16 1996-08-27 Mitsubishi Rayon Co Ltd 浄水器

Non-Patent Citations (11)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 111, no. 2, 10 July 1989, Columbus, Ohio, US; abstract no. 12300 *
DATABASE WPI Section Ch Week 8920, Derwent World Patents Index; Class D15, AN 89-148595 *
DATABASE WPI Section Ch Week 9301, Derwent World Patents Index; Class D15, AN 93-002774 *
DATABASE WPI Section Ch Week 9351, Derwent World Patents Index; Class J01, AN 93-410225 *
DATABASE WPI Section Ch Week 9418, Derwent World Patents Index; Class D15, AN 94-147162 *
DATABASE WPI Section Ch Week 9644, Derwent World Patents Index; Class D15, AN 96-437654 *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 111 (C - 577) 16 March 1989 (1989-03-16) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 167 (C - 1043) 31 March 1993 (1993-03-31) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 118 (C - 1172) 25 February 1994 (1994-02-25) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 357 (C - 1221) 6 July 1994 (1994-07-06) *
PATENT ABSTRACTS OF JAPAN vol. 96, no. 12 26 December 1996 (1996-12-26) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1015384C2 (nl) * 2000-06-06 2001-12-10 Prime Water Systems Gmbh Waterfiltratie-inrichting.
WO2001093991A1 (en) * 2000-06-06 2001-12-13 Prime Water Systems Gmbh Water filtering device

Also Published As

Publication number Publication date
CN1122561C (zh) 2003-10-01
EP0938367B1 (de) 2004-01-21
CN1232408A (zh) 1999-10-20
ES2219776T3 (es) 2004-12-01
CA2268161C (en) 2003-11-25
DE69727310T2 (de) 2004-11-25
AU4402697A (en) 1998-05-05
US5895573A (en) 1999-04-20
WO1998015342A1 (en) 1998-04-16
DE69727310D1 (de) 2004-02-26
ATE258078T1 (de) 2004-02-15
EP0938367A1 (de) 1999-09-01
CA2268161A1 (en) 1998-04-16

Similar Documents

Publication Publication Date Title
US5895573A (en) Ultrafiltration device for domestic/drinking water purification
US5518613A (en) Portable water purifying and drinking device
AU748325B2 (en) Fluid filtration unit
EP0256734A1 (de) Wasserreinigungssystem
US7604737B2 (en) Water filter device for use with individual containers
JPH06198280A (ja) 微生物フィルターを備えた蛇口
NL1017681C2 (nl) Filtersysteem.
US11613477B2 (en) Self-cleaning water filter
CN104039714B (zh) 净水滤筒以及净水器
US6899809B2 (en) Water filtering device
EP1235502B1 (de) Trinkhalm
US20020066698A1 (en) Water filtration system and vessel
KR20090013556A (ko) 고탁도 필터
KR200317263Y1 (ko) 정수기용 필터 카트리지
JP2001187380A (ja) 浄水器
TWM582422U (zh) Hollow fiber membrane filter
JP3593385B2 (ja) 浄水器
JPH02284688A (ja) 濾過チューブと該濾過チューブを用いた濾過・浄水装置
JP3247430B2 (ja) 浄水器
JPH0576594U (ja) 液体浄化用カートリッジ
KR200320058Y1 (ko) 정수기의 필터시스템
JPS6031762Y2 (ja) 浄水用管状体
KR940002422Y1 (ko) 저수식 정수기용 여과기
RU16733U1 (ru) Фильтр для очистки воды
JPH0994569A (ja) 浄水カートリッジ

Legal Events

Date Code Title Description
PD2B A search report has been drawn up
SD Assignments of patents

Owner name: PRIME WATER SYSTEMS GMBH

SD Assignments of patents

Owner name: PRIME WATER INTERNATIONAL N.V.

Effective date: 20090309

TD Modifications of names of proprietors of patents

Owner name: AQUA SOLUTION INTERNATIONAL N.V.

Effective date: 20091027

SD Assignments of patents

Effective date: 20101201

SD Assignments of patents

Effective date: 20120417

V1 Lapsed because of non-payment of the annual fee

Effective date: 20140501