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Expired Canadian patentCanada

Electro-optical ifs finder

CA 2013074 C · Owner: Hughes Aircraft Company · Inventors: Moise, Norton L.; Shih, I-Fu; Chang, David B.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An electro-optical system that implements the self-tiling process of finding proper Iterated Function systems for modeling natural objects. The system can operate in two different modes, a real-time interactive mode and an automated mode. The purpose of the system is to speed up the process of finding a proper IFS for a given object to be modeled. The system makes use of optical processing, including optical means for rotating magnifying/demagnifying and translating an input image. Optical beamsplitters are used to combine transformed images to produce a tiled output image. In one embodiment, an automated controller evaluates the goodness of the match between the tiled image and the input …

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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 March 26, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1990
GrantedJuly 26, 1994
Term endedMarch 26, 2010
Patent numberCA 2013074 C
Classification (IPC)G06E3/00

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 26, 1990Patent grantedJuly 26, 1994Term endedMarch 26, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.