Precious metal color effect materials and production thereof
CA 2392813 A1 · Owner: Sullivan, William Joseph · Inventors: Christie, James Douglas; Sullivan, William Joseph; Zimmerman, Curtis James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A precious metal color effect material is composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a first layer selected from the group consisting of silver gold, platinum, palladium, rhodium, ruthenium osmium, iridium and the alloys thereof which , acts as a reflector to light directed thereon a second layer encapsulating , the first layer in which the second layer provides an optically variable reflection of light impinging thereon and a third layer encapsulating the second layer and being selectively transparent to light directed thereon.
Read the whole patent
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 November 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
- 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.