Expired Canadian patentCanada
Blends of polyamide and ethylene vinyl alcohol copolymers
CA 1234945 A · Owner: Allied Corporation · Inventors: Sacks, William; Mason, Charles D.; Degrassi, Alfieri
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition of matter comprising a polyamide, preferably polyepsiloncaprolactam and from 1, to 65 percent of an ethylene vinyl alcohol copolymer. The composition is useful for making moldings films, and fibers.
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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 28, 1982
GrantedApril 5, 1988
Term endedApril 5, 2005
Patent numberCA 1234945 A
Classification (IPC)C08F16/06 +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.