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Expired European patentEurope

Process for the preparation of a plasminogen activator

EP 0163751 B1 · Applicant: Asahi Kasei Kogyo Kabushiki Kaisha

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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 June 5, 1984 and granted September 20, 1989. A European patent lasts at most 20 years from filing, so its term ended June 5, 2004.
  • 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 December 5, 2009.
  • 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.
FiledJune 5, 1984
PublishedDecember 11, 1985
GrantedSeptember 20, 1989
Term endedJune 5, 2004
Application numberEP 84106397
Classification (CPC)C12N9/6456

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedJune 5, 1984PublishedDec 11, 1985Patent grantedSep 20, 1989Term endedJune 5, 2004

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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