Inorganic fibrous material as reinforcement for composite materials and process for production thereof
CA 1259533 A · Owner: Ube Industries, Ltd. · Inventors: Yamamura, Takemi; Shibuya, Masaki; Waku, Yoshiharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inorganic fibrous material for reinforcing composite materials, said fibrous material composed of a central layer and a surface layer, wherein the surface layer is formed of an inorganic material composed of, (i) an amorphous material consisting substantially of Si, M, C and O, wherein M is Ti or Zr or, (ii) an aggregate consisting substantially of ultrafine crystalline particles of beta-SiC MC, a solid solution of beta-SiC and MC and MC1-x, having a particle diameter of not more than 500 .ANG. wherein M is as defined above and x is a number represented by 0<x<1, and optionally containing amorphous SiO2 and MO2, or, (iii) a mixture of the amorphous material (i) and the aggregate (2), …
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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 September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.