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Expired European patentEurope

Device for the development of a flat diazocopy material by the semi-wet process

EP 0009588 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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 August 20, 1979 and granted January 12, 1983. A European patent lasts at most 20 years from filing, so its term ended August 20, 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 February 20, 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.
FiledAugust 20, 1979
PublishedApril 16, 1980
GrantedJanuary 12, 1983
Term endedAugust 20, 1999
Application numberEP 79103032
Classification (CPC)G03D5/067

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedAug 20, 1979PublishedApril 16, 1980Patent grantedJan 12, 1983Term endedAug 20, 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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