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Expired European patentEurope

Two-phase printing process for the manufacture of conversion style and discharge resist articles

EP 0021432 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 June 26, 1980 and granted October 19, 1983. A European patent lasts at most 20 years from filing, so its term ended June 26, 2000.
  • 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 26, 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.
FiledJune 26, 1980
PublishedJanuary 7, 1981
GrantedOctober 19, 1983
Term endedJune 26, 2000
Application numberEP 80103620
Classification (CPC)D06P5/12 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJune 26, 1980PublishedJan 7, 1981Patent grantedOct 19, 1983Term endedJune 26, 2000

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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