Expired European patentEurope
Accelerated shadow testing method for three dimensional graphics render system
EP 0501635 B1 · Applicant: Hewlett-Packard Company
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 February 14, 1992 and granted April 1, 1998. A European patent lasts at most 20 years from filing, so its term ended February 14, 2012.
- 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 14, 2017.
- 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 14, 1992
PublishedSeptember 2, 1992
GrantedApril 1, 1998
Term endedFebruary 14, 2012
Application numberEP 92301211
Classification (CPC)G06T15/60
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.