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Expired European patentEurope

Electromagnetic radiation modulating device

EP 0490495 B1 · Applicant: FORD-WERKE AKTIENGESELLSCHAFT

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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 November 14, 1991 and granted December 18, 1996. A European patent lasts at most 20 years from filing, so its term ended November 14, 2011.
  • 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 May 14, 2017.
  • 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.
FiledNovember 14, 1991
PublishedJune 17, 1992
GrantedDecember 18, 1996
Term endedNovember 14, 2011
Application numberEP 91310528
Classification (CPC)G02F1/1508

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedNov 14, 1991PublishedJune 17, 1992Patent grantedDec 18, 1996Term endedNov 14, 2011

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.