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Expired European patentEurope

Semiconductor device with an oriented non single crystal silicon thin film and method for its preparation

EP 0631325 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 June 27, 1994 and granted May 7, 2003. A European patent lasts at most 20 years from filing, so its term ended June 27, 2014.
  • 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 December 27, 2019.
  • 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.
FiledJune 27, 1994
PublishedDecember 28, 1994
GrantedMay 7, 2003
Term endedJune 27, 2014
Application numberEP 94304663
Classification (CPC)H10P14/3411 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJune 27, 1994PublishedDec 28, 1994Patent grantedMay 7, 2003Term endedJune 27, 2014

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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