Expired European patentEurope
Method for detecting and eliminating parasitic pictures produced by a pyramidal IR dome
EP 0176121 B1 · Applicant: Philips Electronics N.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed August 19, 1985 and granted February 14, 1990. A European patent lasts at most 20 years from filing, so its term ended August 19, 2005.
- 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 19, 2011.
- 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 19, 1985
PublishedApril 2, 1986
GrantedFebruary 14, 1990
Term endedAugust 19, 2005
Application numberEP 85201327
Classification (CPC)F41G7/2253 +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.