Expired Canadian patentCanada
Equipment and techniques for increasing the dynamic range of a projection system
CA 2414723 C · Owner: Gibbon, Michael A. · Inventors: Zhou, Samuel Z.; Gibbon, Michael A.; Adkins, Sean
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and techniques for enhancing the dynamic range of electronic projection systems are detailed. Included among the techniques are premodulation, luminance compensation, and partial luminance compensation.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 3, 2001 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 3, 2001
GrantedMay 15, 2012
Term endedJuly 3, 2021
Patent numberCA 2414723 C
Classification (IPC)H04N5/74 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.