Polycarbonate/addition polymer blends
CA 1262497 C · Owner: General Electric Company · Inventors: Smith, Gary F.; Fox, Daniel W.; Peters, Edward N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A thermoplastic resin composition comprising a compatible blend of certain polycarbonates and an addition polymer are described which are particularly useful in film packaging applications and the molding of articles. The composition comprises a mixed polycarbonate consisting of bis(hydroxyaryl) sulfone and a second dihydric phenol admixed with one or more thermoplastic addition polymers.
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 October 24, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 24, 2006.
- 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.