FR2020657A1 - - Google Patents

Info

Publication number
FR2020657A1
FR2020657A1 FR6935096A FR6935096A FR2020657A1 FR 2020657 A1 FR2020657 A1 FR 2020657A1 FR 6935096 A FR6935096 A FR 6935096A FR 6935096 A FR6935096 A FR 6935096A FR 2020657 A1 FR2020657 A1 FR 2020657A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6935096A
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
NEDERLANDSE ORGANISATIE
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
NEDERLANDSE ORGANISATIE
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO, NEDERLANDSE ORGANISATIE filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Publication of FR2020657A1 publication Critical patent/FR2020657A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
FR6935096A 1968-10-14 1969-10-14 Withdrawn FR2020657A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6814644A NL6814644A (fr) 1968-10-14 1968-10-14

Publications (1)

Publication Number Publication Date
FR2020657A1 true FR2020657A1 (fr) 1970-07-17

Family

ID=19804917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6935096A Withdrawn FR2020657A1 (fr) 1968-10-14 1969-10-14

Country Status (5)

Country Link
US (1) US3571679A (fr)
DE (1) DE1951749C3 (fr)
FR (1) FR2020657A1 (fr)
GB (1) GB1234547A (fr)
NL (1) NL6814644A (fr)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718641B2 (fr) * 1973-07-17 1982-04-17
NL160303C (nl) * 1974-03-25 1979-10-15 Verto Nv Werkwijze voor het vervaardigen van een vezelfilter.
CA1043289A (fr) * 1974-06-17 1978-11-28 Allen L. Taylor Machine a intervertir les conducteurs
JPS5821413B2 (ja) * 1974-07-31 1983-04-30 松下電器産業株式会社 エレクトレツトフイルム
US4215682A (en) * 1978-02-06 1980-08-05 Minnesota Mining And Manufacturing Company Melt-blown fibrous electrets
US4308223A (en) * 1980-03-24 1981-12-29 Albany International Corp. Method for producing electret fibers for enhancement of submicron aerosol filtration
US4434114A (en) 1982-02-04 1984-02-28 Pennwalt Corporation Production of wrinkle-free piezoelectric films by poling
DE3275421D1 (en) * 1982-03-29 1987-03-12 Rhodia Ag Process and apparatus for the manufacture of electret filaments, fibres or the like
US4795668A (en) * 1983-10-11 1989-01-03 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
US4729371A (en) * 1983-10-11 1988-03-08 Minnesota Mining And Manufacturing Company Respirator comprised of blown bicomponent fibers
US4547420A (en) * 1983-10-11 1985-10-15 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
JPS61231270A (ja) * 1985-04-04 1986-10-15 東レ株式会社 エレクトレツト繊維シ−トの製造法
US4874659A (en) * 1984-10-24 1989-10-17 Toray Industries Electret fiber sheet and method of producing same
JPS61272063A (ja) * 1985-05-29 1986-12-02 東レ株式会社 マスク
US5993943A (en) * 1987-12-21 1999-11-30 3M Innovative Properties Company Oriented melt-blown fibers, processes for making such fibers and webs made from such fibers
US5141699A (en) * 1987-12-21 1992-08-25 Minnesota Mining And Manufacturing Company Process for making oriented melt-blown microfibers
US4988560A (en) * 1987-12-21 1991-01-29 Minnesota Mining And Manufacturing Company Oriented melt-blown fibers, processes for making such fibers, and webs made from such fibers
US5314737A (en) * 1991-09-30 1994-05-24 Kimberly-Clark Corporation Area thinned thin sheet materials
US5443886A (en) * 1991-09-30 1995-08-22 Kimberly-Clark Corporation Hydrosonically embedded soft thin film materials
US5370830A (en) * 1992-09-23 1994-12-06 Kimberly-Clark Corporation Hydrosonic process for forming electret filter media
US5336452A (en) * 1992-09-23 1994-08-09 Kimberly-Clark Corporation Process for hydrosonically area embossing thin thermoplastic film materials
EP0623941B1 (fr) * 1993-03-09 1997-08-06 Hoechst Celanese Corporation Electrets en polymère ayant une stabilité de charge ameliorée
US6537932B1 (en) 1997-10-31 2003-03-25 Kimberly-Clark Worldwide, Inc. Sterilization wrap, applications therefor, and method of sterilizing
US6365088B1 (en) 1998-06-26 2002-04-02 Kimberly-Clark Worldwide, Inc. Electret treatment of high loft and low density nonwoven webs
US6513184B1 (en) 2000-06-28 2003-02-04 S. C. Johnson & Son, Inc. Particle entrapment system
US6550639B2 (en) 2000-12-05 2003-04-22 S.C. Johnson & Son, Inc. Triboelectric system
US6846450B2 (en) * 2002-06-20 2005-01-25 3M Innovative Properties Company Method for making a nonwoven web
US6824733B2 (en) * 2002-06-20 2004-11-30 3M Innovative Properties Company Meltblowing apparatus employing planetary gear metering pump
US6861025B2 (en) * 2002-06-20 2005-03-01 3M Innovative Properties Company Attenuating fluid manifold for meltblowing die
DE102007018937A1 (de) * 2007-04-21 2008-10-23 Helsa-Automotive Gmbh & Co. Kg Elektrostatisch geladenes oder aufladbares Filtermaterial und Verfahren zu dessen Herstellung
RU2521598C2 (ru) * 2011-01-13 2014-07-10 Общество с ограниченной ответственностью "МЕДЭЛ" Способ изготовления электретов
US11786853B2 (en) 2020-08-10 2023-10-17 F.N. Smith Corporation Facepiece electrostatic charging devices and methods thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365633A (en) * 1965-05-27 1968-01-23 Linden Lab Inc Method of treating polycrystalline ceramics for polarizing them

Also Published As

Publication number Publication date
GB1234547A (fr) 1971-06-03
NL6814644A (fr) 1970-04-16
US3571679A (en) 1971-03-23
DE1951749A1 (de) 1970-05-06
DE1951749C3 (de) 1975-03-13
DE1951749B2 (de) 1974-07-25

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Legal Events

Date Code Title Description
ST Notification of lapse