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Expired European patentEurope

Method of manufacturing filter bags and a filter bag

EP 0545970 B1 · Applicant: AHLSTROM CONSUMER PRODUCTS LTD.

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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.

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Why it's free to use

  • Filed August 16, 1991 and granted December 21, 1994. A European patent lasts at most 20 years from filing, so its term ended August 16, 2011.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by February 16, 2017.
  • 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 16, 1991
PublishedJune 16, 1993
GrantedDecember 21, 1994
Term endedAugust 16, 2011
Application numberEP 91914645
Classification (CPC)A47J31/08

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedAug 16, 1991PublishedJune 16, 1993Patent grantedDec 21, 1994Term endedAug 16, 2011

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

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