Expired Canadian patentCanada
Process for crosslinking and, if desired, foaming natural or synthetic homo- and/or copolymers
CA 1191988 A · Owner: Bauer, Kurt · Inventors: Bauer, Kurt
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 process is provided for crosslinking foaming, or both, of polymers at temperatures above 150°C using at least one azo ester and/or azo ether in combination with at least one crosslinking intensifier having at least two reactive carbon-carbon double or triple bonds.
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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 August 13, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 20, 1982
GrantedAugust 13, 1985
Term endedAugust 13, 2002
Patent numberCA 1191988 A
Classification (IPC)C08K5/00 +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.