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Expired European patentEurope

Polymer scale deposition preventive agent

EP 0712866 B1 · Applicant: SHIN-ETSU CHEMICAL CO., LTD.

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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 November 14, 1995 and granted July 29, 1998. A European patent lasts at most 20 years from filing, so its term ended November 14, 2015.
  • 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 May 14, 2021.
  • 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.
FiledNovember 14, 1995
PublishedMay 22, 1996
GrantedJuly 29, 1998
Term endedNovember 14, 2015
Application numberEP 95402545
Classification (CPC)C08F2/004

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedNov 14, 1995PublishedMay 22, 1996Patent grantedJuly 29, 1998Term endedNov 14, 2015

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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