Expired European patentEurope
Channel plate for an image intensifier tube, and process for producing a channel plate, and image intensifier tube provided with a channel plate
EP 0362347 B1 · Applicant: B.V. Optische Industrie "De Oude Delft"
Overview
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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 23, 1989 and granted August 21, 1996. A European patent lasts at most 20 years from filing, so its term ended March 23, 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 September 23, 2014.
- 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 23, 1989
PublishedApril 11, 1990
GrantedAugust 21, 1996
Term endedMarch 23, 2009
Application numberEP 89904026
Classification (CPC)H01J31/507 +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.