Poly(arylene ether cetones) having biphenylene-4, 4'-dicarbonyl group
CA 1311331 C · Owner: Raychem Corporation · Inventors: Mazzanti, John B.; Moore, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel copoly(arylene ether ketones) having a biphenylene-4,4'-dicarbonyl group in their backbone comprising, (A) a repeat unit, and, (B) a repeat unit selected from the group consisting of and, where R, which is the same in each of repeat units (A) and (B), is a direct bond, , or, ;, the molar ratio of repeat units (A) to repeat units (B) being between about 10:90 and about 70:30.
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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 December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 2009.
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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.