Three-dimensional display method(s) and apparatus
CA 2195985 C · Owner: Mischke, Mark R. · Inventors: Mischke, Mark R.; Telfer, Stephen J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method(s) and associated apparatus are provided for the display of threedimensional still or dynamic images in either monochrome or color. Several embodiments are described and each includes either one or more waveguide arrangements by which imges formed in two-dimensional planes can be optically separated in the third dimension by arranging for their selective viewing along paths having different optical path lengths to impart a perception of depth to the image.
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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 13, 1995 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.