Expired European patentEurope
Color balanced image detector system
EP 0388658 B1 · Applicant: POLAROID CORPORATION
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 February 23, 1990 and granted July 7, 1993. A European patent lasts at most 20 years from filing, so its term ended February 23, 2010.
- 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 August 23, 2015.
- 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.
FiledFebruary 23, 1990
PublishedSeptember 26, 1990
GrantedJuly 7, 1993
Term endedFebruary 23, 2010
Application numberEP 90103573
Classification (CPC)H04N25/71 +2 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.