Expired European patentEurope
A process for the preparation of solid dispersions of acid salts of tetravalent metals having lamellar structure in an inert inorganic matrix, and the products so obtained
EP 0322013 B1 · Applicant: ENIRICERCHE S.p.A.
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 December 2, 1988 and granted March 17, 1993. A European patent lasts at most 20 years from filing, so its term ended December 2, 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 June 2, 2014.
- 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.
FiledDecember 2, 1988
PublishedJune 28, 1989
GrantedMarch 17, 1993
Term endedDecember 2, 2008
Application numberEP 88202769
Classification (CPC)B01J39/02 +2 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.