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Expired European patentEurope

Photosensitive coating composition and its use in the production of a negative resist image

EP 0014237 B1 · Applicant: International Business Machines Corporation

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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 19, 1979 and granted April 20, 1983. A European patent lasts at most 20 years from filing, so its term ended November 19, 1999.
  • 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 19, 2005.
  • 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 19, 1979
PublishedAugust 20, 1980
GrantedApril 20, 1983
Term endedNovember 19, 1999
Application numberEP 79104589
Classification (CPC)C08F299/028 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedNov 19, 1979PublishedAug 20, 1980Patent grantedApril 20, 1983Term endedNov 19, 1999

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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