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European application, no grantEurope

Light control substance and light control method using the same

EP 0753789 A2 · Applicant: RESEARCH DEVELOPMENT CORPORATION OF JAPAN

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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 10, 1996 and never granted as a European patent. Had it been granted, its 20-year term would have ended July 10, 2016.
  • 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 10, 2022.
  • 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 10, 1996
PublishedJanuary 15, 1997
GrantedNever granted
Term endedJuly 10, 2016
Application numberEP 96111095
Classification (CPC)G02F1/3523

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedJuly 10, 1996PublishedJan 15, 1997Term endedJuly 10, 2016

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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