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Expired European patentEurope

Finishing agent for natural and synthetic leather

EP 0318751 B1 · Applicant: BAYER AG

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Overview

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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 November 14, 1988 and granted April 21, 1993. A European patent lasts at most 20 years from filing, so its term ended November 14, 2008.
  • 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 May 14, 2014.
  • 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.
FiledNovember 14, 1988
PublishedJune 7, 1989
GrantedApril 21, 1993
Term endedNovember 14, 2008
Application numberEP 88118959
Classification (CPC)C14C11/003

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedNov 14, 1988PublishedJune 7, 1989Patent grantedApril 21, 1993Term endedNov 14, 2008

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.