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Expired European patentEurope

Method and apparatus for manufacturing superconducting ceramics materials

EP 0306286 B1 · Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., 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.

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Why it's free to use

  • Filed August 31, 1988 and granted July 3, 1996. A European patent lasts at most 20 years from filing, so its term ended August 31, 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 March 3, 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.
FiledAugust 31, 1988
PublishedMarch 8, 1989
GrantedJuly 3, 1996
Term endedAugust 31, 2008
Application numberEP 88308047
Classification (CPC)H10N60/0381 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 31, 1988PublishedMarch 8, 1989Patent grantedJuly 3, 1996Term endedAug 31, 2008

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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