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Expired European patentEurope

Method of decomposing an alkyl chloroformate

EP 0625496 B1 · Applicant: UBE INDUSTRIES, 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 May 21, 1994 and granted April 9, 1997. A European patent lasts at most 20 years from filing, so its term ended May 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 November 21, 2019.
  • 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.
FiledMay 21, 1994
PublishedNovember 23, 1994
GrantedApril 9, 1997
Term endedMay 21, 2014
Application numberEP 94107893
Classification (CPC)C07C17/363

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 21, 1994PublishedNov 23, 1994Patent grantedApril 9, 1997Term endedMay 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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