Thermoplastic composites comprising a polyaryl ether sulphone matrix resin
CA 1306644 C · Owner: Harris, James E. · Inventors: Harris, James E.; Michno, Michael J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Composites comprising structural fibers such as carbon fibers and, as the matrix resin an aryl ether sul-, fone polymer comprising a 4,4'-bis-phenyl sulfonyl biphenyl and at least two additional arylene structural units. The matrix resins exhibit improved toughness and stress crack resistance and a reduced tendency toward crystallization. The polymers are soluble and film-forming from solution, and may be used as coating and impregnating resins for producing the laminates and fiber-reinforced composites of this invention. 26,706
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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 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
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Timeline
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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.