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Expired European patentEurope

Arrangement for the electrically controlled modulation of a light beam

EP 0526947 B1 · Applicant: ASCOM TECH AG

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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 July 30, 1992 and granted December 10, 1997. A European patent lasts at most 20 years from filing, so its term ended July 30, 2012.
  • 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 January 30, 2018.
  • 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.
FiledJuly 30, 1992
PublishedFebruary 10, 1993
GrantedDecember 10, 1997
Term endedJuly 30, 2012
Application numberEP 92202369
Classification (CPC)H04B10/2507

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJuly 30, 1992PublishedFeb 10, 1993Patent grantedDec 10, 1997Term endedJuly 30, 2012

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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