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Expired European patentEurope

Method for producing aryl thiols by hydrogenating diaryldisulphides

EP 1027331 B1 · Applicant: Bayer Aktiengesellschaft

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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 October 12, 1998 and granted October 9, 2002. A European patent lasts at most 20 years from filing, so its term ended October 12, 2018.
  • 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 April 12, 2024.
  • 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.
FiledOctober 12, 1998
PublishedAugust 16, 2000
GrantedOctober 9, 2002
Term endedOctober 12, 2018
Application numberEP 98955433
Classification (CPC)C07C319/06

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedOct 12, 1998PublishedAug 16, 2000Patent grantedOct 9, 2002Term endedOct 12, 2018

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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