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Expired European patentEurope

Rust-proofing agent, rustproofing coating composition and coating method for preventing or inhibiting corrosion of metallic surface

EP 0289953 B1 · Applicant: Kyowa Chemical Industry Co., Ltd.

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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 April 29, 1988 and granted January 12, 1994. A European patent lasts at most 20 years from filing, so its term ended April 29, 2008.
  • 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 October 29, 2013.
  • 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.
FiledApril 29, 1988
PublishedNovember 9, 1988
GrantedJanuary 12, 1994
Term endedApril 29, 2008
Application numberEP 88106908
Classification (CPC)C09D5/084

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedApril 29, 1988PublishedNov 9, 1988Patent grantedJan 12, 1994Term endedApril 29, 2008

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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