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Expired European patentEurope

Method of and apparatus for effecting a thickness-reduction rolling of a hot thin plate material

EP 0241919 B1 · Applicant: HITACHI, LTD.

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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 14, 1987 and granted July 18, 1990. A European patent lasts at most 20 years from filing, so its term ended April 14, 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 October 14, 2012.
  • 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 14, 1987
PublishedOctober 21, 1987
GrantedJuly 18, 1990
Term endedApril 14, 2007
Application numberEP 87105542
Classification (CPC)B21B1/463 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedApril 14, 1987PublishedOct 21, 1987Patent grantedJuly 18, 1990Term endedApril 14, 2007

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