Expired Canadian patentCanada
Polyamide compositions toughened with crosslinked acrylic rubber
CA 1202445 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Novak, Ernest R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyamide toughening crosslinked acrylic rubbers having an outer layer of an alkyl acrylate and a polyamide graft-linking monomer, this outer layer having a glass transition temperature of less than about 20°C.
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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 14, 1982
GrantedMarch 25, 1986
Term endedMarch 25, 2003
Patent numberCA 1202445 A
Classification (IPC)C08F283/04 +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.