Polycarbonate articles coated with an adherent organopolysiloxane
CA 1138590 A · Owner: General Electric Company · Inventors: Humphrey, James S. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coated polycarbonate article comprising a polycarbonate substrate having (i) a primer layer containing a UV cured reaction product of (a) a polyfunctional acrylic ester monomer, (b) an organic silicon compound represented by the formula RCSiX4-c wherein R is an organic group containing olefinic unsaturation X is an alkoxy, acyloxy, and aryloxy group and c is an integer of from, 1 to 3, and optionally (c) an acrylate modified polymer; and (ii) a thermoset (silica filled) organopolysiloxane top coat on said UV cured primer layer.
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
- Granted December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.