Expired European patentEurope
Phosphating method of steel pieces in order to improve their corrosion and wear resistance
EP 0560641 B1 · Applicant: CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT Société dite:
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 February 10, 1993 and granted December 20, 1995. A European patent lasts at most 20 years from filing, so its term ended February 10, 2013.
- 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 August 10, 2018.
- 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.
FiledFebruary 10, 1993
PublishedSeptember 15, 1993
GrantedDecember 20, 1995
Term endedFebruary 10, 2013
Application numberEP 93400334
Classification (CPC)C23C8/80 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.