EP3487602A4 - Filtermedien mit mehrschichtigem electret - Google Patents

Filtermedien mit mehrschichtigem electret Download PDF

Info

Publication number: EP3487602A4
Authority: EP; European Patent Office
Prior art keywords: media containing; filtration media; layered filtration; electrets; containing electrets
Prior art date: 2016-07-22
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.): Pending

Application number

EP17831940.6A

Other languages

English (en)

French (fr)

Other versions

EP3487602A1 (de

Inventor

Sudheer Jinka

David T. Healey

Mark A. GALLIMORE

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Hollingsworth and Vose Co

Original Assignee

Hollingsworth and Vose Co

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.)

2016-07-22

Filing date

2017-07-21

Publication date

2020-01-15

2016-07-22 Priority claimed from US15/217,718 external-priority patent/US12420221B2/en

2017-07-21 Application filed by Hollingsworth and Vose Co filed Critical Hollingsworth and Vose Co

2019-05-29 Publication of EP3487602A1 publication Critical patent/EP3487602A1/de

2020-01-15 Publication of EP3487602A4 publication Critical patent/EP3487602A4/de

Status Pending legal-status Critical Current

Links

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0435—Electret
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0659—The layers being joined by needling
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1258—Permeability

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Filtering Materials (AREA)
Laminated Bodies (AREA)

EP17831940.6A 2016-07-22 2017-07-21 Filtermedien mit mehrschichtigem electret Pending EP3487602A4 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US15/217,718 US12420221B2 (en)	2016-07-01	2016-07-22	Multi-layered electret-containing filtration media
PCT/US2017/043249 WO2018017937A1 (en)	2016-07-22	2017-07-21	Multi-layered electret-containing filtration media

Publications (2)

Publication Number	Publication Date
EP3487602A1 EP3487602A1 (de)	2019-05-29
EP3487602A4 true EP3487602A4 (de)	2020-01-15

Family

ID=60996051

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP17831940.6A Pending EP3487602A4 (de)	2016-07-22	2017-07-21	Filtermedien mit mehrschichtigem electret

Country Status (3)

Country	Link
EP (1)	EP3487602A4 (de)
CN (1)	CN109475798A (de)
WO (1)	WO2018017937A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2018156561A1 (en) *	2017-02-21	2018-08-30	Hollingsworth & Vose Company	Electret-containing filter media
US20230173215A1 (en)	2021-12-08	2023-06-08	Ambu A/S	Medical airway device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5672188A (en) *	1996-05-28	1997-09-30	Aaf International	High capacity filter media
US20150121823A1 (en) *	2007-02-28	2015-05-07	Hollingsworth & Vose Company	Waved filter media and elements

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB9815629D0 (en)	1998-07-18	1998-09-16	Hepworth Minerals & Chemicals	Filter materials and methods for the producton thereof
EP2117674A1 (de) *	2007-02-22	2009-11-18	Donaldson Company, Inc.	Filterelement und verfahren
CN107126764A (zh)	2007-11-09	2017-09-05	霍林斯沃思和沃斯有限公司	熔喷过滤介质
US8986432B2 (en) *	2007-11-09	2015-03-24	Hollingsworth & Vose Company	Meltblown filter medium, related applications and uses
US8679218B2 (en) *	2010-04-27	2014-03-25	Hollingsworth & Vose Company	Filter media with a multi-layer structure
US20120152821A1 (en)	2010-12-17	2012-06-21	Hollingsworth & Vose Company	Fine fiber filter media and processes
US20120152824A1 (en)	2010-12-17	2012-06-21	Hollingsworth & Vose Company	Fine fiber filter media and processes
US9149749B2 (en) *	2012-11-13	2015-10-06	Hollingsworth & Vose Company	Pre-coalescing multi-layered filter media
US20160166953A1 (en) *	2014-12-15	2016-06-16	Hollingsworth & Vose Company	Filter media including fine staple fibers
US10343095B2 (en) *	2014-12-19	2019-07-09	Hollingsworth & Vose Company	Filter media comprising a pre-filter layer

2017
- 2017-07-21 EP EP17831940.6A patent/EP3487602A4/de active Pending
- 2017-07-21 WO PCT/US2017/043249 patent/WO2018017937A1/en not_active Ceased
- 2017-07-21 CN CN201780044830.6A patent/CN109475798A/zh active Pending

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5672188A (en) *	1996-05-28	1997-09-30	Aaf International	High capacity filter media
US20150121823A1 (en) *	2007-02-28	2015-05-07	Hollingsworth & Vose Company	Waved filter media and elements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018017937A1 *

Also Published As

Publication number	Publication date
EP3487602A1 (de)	2019-05-29
WO2018017937A1 (en)	2018-01-25
CN109475798A (zh)	2019-03-15

Legal Events

Date	Code	Title	Description
2018-01-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2019-04-26	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2019-04-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2019-05-29	17P	Request for examination filed	Effective date: 20190123
2019-05-29	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2019-05-29	AX	Request for extension of the european patent	Extension state: BA ME
2019-10-30	DAV	Request for validation of the european patent (deleted)
2019-10-30	DAX	Request for extension of the european patent (deleted)
2019-12-09	REG	Reference to a national code	Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: B01D0039160000 Ipc: B01D0039180000
2020-01-15	A4	Supplementary search report drawn up and despatched	Effective date: 20191213
2020-01-15	RIC1	Information provided on ipc code assigned before grant	Ipc: B01D 39/16 20060101ALI20191209BHEP Ipc: B01D 39/18 20060101AFI20191209BHEP
2023-02-17	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: EXAMINATION IS IN PROGRESS
2023-03-22	17Q	First examination report despatched	Effective date: 20230221

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