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Expired European patentEurope

Improvements in a method and an apparatus for producing titanium metal from titanium tetrachloride

EP 0160779 B1 · Applicant: Ishizuka, Hiroshi

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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.

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Why it's free to use

  • Filed March 22, 1982 and granted October 19, 1988. A European patent lasts at most 20 years from filing, so its term ended March 22, 2002.
  • 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 September 22, 2007.
  • 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.
FiledMarch 22, 1982
PublishedNovember 13, 1985
GrantedOctober 19, 1988
Term endedMarch 22, 2002
Application numberEP 85100932
Classification (CPC)B01J19/14 +2 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedMarch 22, 1982PublishedNov 13, 1985Patent grantedOct 19, 1988Term endedMarch 22, 2002

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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