Expired European patentEurope
A method of forming a zinc-aluminium coating on a steel strip
EP 0453432 B1 · Applicant: CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk
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.
Why it's free to use
- Filed April 12, 1991 and granted November 30, 1994. A European patent lasts at most 20 years from filing, so its term ended April 12, 2011.
- 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 12, 2016.
- 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 12, 1991
PublishedOctober 23, 1991
GrantedNovember 30, 1994
Term endedApril 12, 2011
Application numberEP 91870059
Classification (CPC)C23C2/026 +1 more
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.