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Expired European patentEurope

Aminosilane salts and silanamides of carboxylic acids as corrosion inhibitors

EP 0835289 B1 · Applicant: Ciba Specialty Chemicals Holding 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 June 17, 1996 and granted May 19, 1999. A European patent lasts at most 20 years from filing, so its term ended June 17, 2016.
  • 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 17, 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.
FiledJune 17, 1996
PublishedApril 15, 1998
GrantedMay 19, 1999
Term endedJune 17, 2016
Application numberEP 96922816
Classification (CPC)C08F8/42 +1 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedJune 17, 1996PublishedApril 15, 1998Patent grantedMay 19, 1999Term endedJune 17, 2016

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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