Expired Canadian patentCanada
Thermoplastic molding composition comprising styrene- maleimide and polycarbonate
CA 1085083 A · Owner: Arco Polymers, Inc. · Inventors: Fava, Ronald A.
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoplastic molding compositions consist of: a) 10-90% by weight copolymer of maleimide and styrene containing about 5-35% maleimide and 60-95% styrene; and, b) 10-90% by weight of a polycarbonate of a dihydric phenol and a derivative of carbonic acid.
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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
- Granted September 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1977
GrantedSeptember 2, 1980
Term endedSeptember 2, 1997
Patent numberCA 1085083 A
Classification (IPC)C08L69/00 +2 more
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.