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Expired European patentEurope

Precipitation polymerization of vinyl lactam terpolymers

EP 0479856 B1 · Applicant: ISP INVESTMENTS INC.

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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 14, 1990 and granted February 15, 1995. A European patent lasts at most 20 years from filing, so its term ended June 14, 2010.
  • 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 14, 2015.
  • 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 14, 1990
PublishedApril 15, 1992
GrantedFebruary 15, 1995
Term endedJune 14, 2010
Application numberEP 90910019
Classification (CPC)C08F226/06 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJune 14, 1990PublishedApril 15, 1992Patent grantedFeb 15, 1995Term endedJune 14, 2010

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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