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Expired European patentEurope

Method of controlling the crystal grain size of uranium dioxide pellet

EP 0322480 B1 · Applicant: MITSUBISHI MATERIALS CORPORATION

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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 December 30, 1987 and granted March 31, 1999. A European patent lasts at most 20 years from filing, so its term ended December 30, 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 June 30, 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.
FiledDecember 30, 1987
PublishedJuly 5, 1989
GrantedMarch 31, 1999
Term endedDecember 30, 2007
Application numberEP 87119391
Classification (CPC)C01G43/025

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedDec 30, 1987PublishedJuly 5, 1989Patent grantedMarch 31, 1999Term endedDec 30, 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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