High chroma paint containing multilayer interference platelets
CA 2188156 C · Owner: Fisher, Shari Powell · Inventors: Fisher, Shari Powell; Phillips, Roger W.; Coombs, Paul G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collection of durable, high chroma, thin film interference platelets (28) are adapted to be added to a liquid medium for producing a predetermined optical response to radiation incident on a surface of a solidified version of the medium. The collection of interference platelets (28) are produced by forming a multilayer interference thin film structure on a flexible web material and separating the multilayer interference thin film structure from the web to provide a collection of interference platelets (28). Interference platelets (28) consist of a metal reflecting layer having first and second surfaces and a multilayer interference thin film structure disposed on at least one of the …
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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 April 11, 1995 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.