Composite panelling materials for displaying back-lit graphics and colours
CA 2228057 C · Owner: Leach, James R. · Inventors: Leach, James R.; Cass, S. Thornton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite panel material for the back-lit display of graphic and alphanumeric designs and colour fields as disclosed which includes regions that appear metallic and highly reflective when front-lit but which when back-lit transmit a portion of the back-lighting to give a "see-through metal" effect. Panelling material according to the design comprises a transparent base medium daytime design images which are visible when the panel material is front- but not back-lit and a partially reflective metallized element which appears opaque and shiny when front- but not when back-lit of a pre-selected degree of transparency to permit the viewing of one set of images and colours in front-lighting …
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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 January 28, 1998 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2020.
- 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.