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Expired European patentEurope

Developers and methods of processing radiation sensitive plates using the same

EP 0033232 B1 · Applicant: Vickers Limited

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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 January 23, 1981 and granted June 6, 1984. A European patent lasts at most 20 years from filing, so its term ended January 23, 2001.
  • 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 July 23, 2006.
  • 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.
FiledJanuary 23, 1981
PublishedAugust 5, 1981
GrantedJune 6, 1984
Term endedJanuary 23, 2001
Application numberEP 81300301
Classification (CPC)G03F7/32

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJan 23, 1981PublishedAug 5, 1981Patent grantedJune 6, 1984Term endedJan 23, 2001

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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