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Expired European patentEurope

Process for producing hydrogenated nbr latex

EP 0680992 B1 · Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.

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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 21, 1994 and granted March 6, 2002. A European patent lasts at most 20 years from filing, so its term ended November 21, 2014.
  • 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 21, 2020.
  • 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 21, 1994
PublishedNovember 8, 1995
GrantedMarch 6, 2002
Term endedNovember 21, 2014
Application numberEP 95900923
Classification (CPC)C08C19/02 +1 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedNov 21, 1994PublishedNov 8, 1995Patent grantedMarch 6, 2002Term endedNov 21, 2014

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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