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Expired European patentEurope

Liquid concentrate composition for preparing phosphating solutions containing manganese

EP 0448130 B1 · Applicant: PPG INDUSTRIES, 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 September 18, 1987 and granted January 3, 1996. A European patent lasts at most 20 years from filing, so its term ended September 18, 2007.
  • 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 March 18, 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.
FiledSeptember 18, 1987
PublishedSeptember 25, 1991
GrantedJanuary 3, 1996
Term endedSeptember 18, 2007
Application numberEP 91106972
Classification (CPC)C23C22/364 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedSep 18, 1987PublishedSep 25, 1991Patent grantedJan 3, 1996Term endedSep 18, 2007

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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