(19)
(11) EP 3 487 602 A1

(12)

(43) Date of publication:
29.05.2019 Bulletin 2019/22

(21) Application number: 17831940.6

(22) Date of filing: 21.07.2017
(51) International Patent Classification (IPC): 
B01D 39/16(2006.01)
(86) International application number:
PCT/US2017/043249
(87) International publication number:
WO 2018/017937 (25.01.2018 Gazette 2018/04)
(84) Designated Contracting States:
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
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 22.07.2016 US 201615217718

(71) Applicant: Hollingsworth & Vose Company
East Walpole, MA 02032 (US)

(72) Inventors:
  • JINKA, Sudheer
    Christiansburg VA 24073 (US)
  • HEALEY, David, T.
    Bellingham MA 02019 (US)
  • GALLIMORE, Mark, A.
    Floyd VA 24091 (US)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) MULTI-LAYERED ELECTRET-CONTAINING FILTRATION MEDIA