Interpolymers of bicyclic amide acetals/dicarboxylic acid anhydrides/polyepoxides
CA 1278641 C · Owner: Goel, Anil B. · Inventors: Goel, Anil B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of novel polymers by the interpolymerization of a bicyclic amide acetal a, dicarboxylic acid anhydride and a polyepoxide at a temperature in the range of from 80°C. to about 200°C. and at a pressure in the range of from about ambient to about 50 atmospheres is described.
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 January 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2008.
- 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.