Expired European patentEurope
Key signal generating device, picture producing device, key signal generating method, and picture producing method
EP 0771107 B1 · Applicant: SONY CORPORATION
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 May 10, 1996 and granted December 11, 2002. A European patent lasts at most 20 years from filing, so its term ended May 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 November 10, 2021.
- 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.
FiledMay 10, 1996
PublishedMay 2, 1997
GrantedDecember 11, 2002
Term endedMay 10, 2016
Application numberEP 96913731
Classification (CPC)H04N5/2622 +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.