Vinyl halide stripping process
CA 1059690 A · Owner: Pantasote Company (The) · Inventors: Weintraub, Lester
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Vinyl halide polymers and copolymers are formed in the presence of a linear, branched chain or cyclic alkane and the polymer is then heated to remove the alkane and unreacted vinyl halide therefrom. The polymers so formed have reduced amounts of vinyl halide therein and hence are less likely to contaminate the air with airborne vinyl halide.
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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- 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.