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Expired Canadian patentCanada

Method for obtaining images for use in displaying a three-dimensional illusion and related apparatus

CA 1333533 C · Owner: Mayhew, Christopher A. · Inventors: Mayhew, Christopher A.; Mayhew, Christopher A.; Pritchard, Eric K.

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Abstract From the Canadian patent

A method is provided for obtaining images for use in displaying a three-dimensional illusion which includes the step of obtaining first and second images of a subject volume having foreground and background portions with the points of origin of those images located in a first plane which includes left and right points of origin of an observer of the subject volume and which is normal to the optical axis of that observer. The first and second points of origin are also respectively located equidistant above and below a first line interconnecting the left and right points of origin and are located along a second line which is normal to and bisects the first line. The first and second optical …

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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

  • Granted December 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 20, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 27, 1988
GrantedDecember 20, 1994
Term endedDecember 20, 2011
Patent numberCA 1333533 C
Classification (IPC)G03B35/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedApril 27, 1988Patent grantedDec 20, 1994Term endedDec 20, 2011

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