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Expired European patentEurope

Novel benzothiazole derivatives

EP 0397169 B1 · Applicant: TOYO BOSEKI KABUSHIKI KAISHA Trading under the name of Toyobo 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 May 10, 1990 and granted April 13, 1994. A European patent lasts at most 20 years from filing, so its term ended May 10, 2010.
  • 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 10, 2015.
  • 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 10, 1990
PublishedNovember 14, 1990
GrantedApril 13, 1994
Term endedMay 10, 2010
Application numberEP 90108815
Classification (CPC)C07D277/82 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedMay 10, 1990PublishedNov 14, 1990Patent grantedApril 13, 1994Term endedMay 10, 2010

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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