Patent Yard Sign in
Expired European patentEurope

Microporous polyolefin film and separator for storage cell

EP 1785451 B1 · Applicant: Asahi Kasei Chemicals Corporation

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Google PatentsEPO PDF

Why it's free to use

  • Filed August 29, 2005 and granted October 12, 2016. A European patent lasts at most 20 years from filing, so its term ended August 29, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledAugust 29, 2005
PublishedMay 16, 2007
GrantedOctober 12, 2016
Term endedAugust 29, 2025
Application numberEP 05775109
Classification (CPC)H01M50/403 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedAug 29, 2005PublishedMay 16, 2007Patent grantedOct 12, 2016Term endedAug 29, 2025

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.