Expired European patentEurope
Three-dimensional activated liquid-crystal matrix display device, and process for operating it
EP 0200602 B1 · Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed March 28, 1986 and granted January 16, 1991. A European patent lasts at most 20 years from filing, so its term ended March 28, 2006.
- 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 September 28, 2011.
- 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.
FiledMarch 28, 1986
PublishedDecember 10, 1986
GrantedJanuary 16, 1991
Term endedMarch 28, 2006
Application numberEP 86400690
Classification (CPC)G02F1/1362 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.