Expired European patentEurope
Optical correlator system
EP 0387347 B1 · Applicant: GRUMMAN AEROSPACE 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 August 16, 1989 and granted October 12, 1994. A European patent lasts at most 20 years from filing, so its term ended August 16, 2009.
- 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 February 16, 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.
FiledAugust 16, 1989
PublishedSeptember 19, 1990
GrantedOctober 12, 1994
Term endedAugust 16, 2009
Application numberEP 89911345
Classification (CPC)G06V10/88 +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.