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Expired European patentEurope

Depletion mode thin film semiconductor photodetectors

EP 0165764 B1 · Applicant: XEROX CORPORATION

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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 June 12, 1985 and granted April 7, 1993. A European patent lasts at most 20 years from filing, so its term ended June 12, 2005.
  • 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 12, 2010.
  • 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 12, 1985
PublishedDecember 27, 1985
GrantedApril 7, 1993
Term endedJune 12, 2005
Application numberEP 85304160
Classification (CPC)H10F30/282

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJune 12, 1985PublishedDec 27, 1985Patent grantedApril 7, 1993Term endedJune 12, 2005

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.