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Expired European patentEurope

Composition and method for producing polythioethers having pendent methyl chains

EP 1078012 B1 · Applicant: PRC-DeSoto International, Inc.

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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 March 29, 1999 and granted May 25, 2005. A European patent lasts at most 20 years from filing, so its term ended March 29, 2019.
  • 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 September 29, 2024.
  • 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.
FiledMarch 29, 1999
PublishedFebruary 28, 2001
GrantedMay 25, 2005
Term endedMarch 29, 2019
Application numberEP 99914284
Classification (CPC)C08G75/045

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 29, 1999PublishedFeb 28, 2001Patent grantedMay 25, 2005Term endedMarch 29, 2019

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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