Electromagnetic wave absorbing material
CA 1330704 C · Owner: Ishikawa, Toshihiro · Inventors: Yamamura, Takemi; Ishikawa, Toshihiro; Shibuya, Masaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an electromagnetic wave absorbing structure comprising:, A a composite of a plurality of laminated layers of an electromagnetic wave absorbing material comprising a fiber having a specific resistance of 10-2 to 102 .OMEGA..cm and a matrix wherein, the fiber is composed of an inorganic substance selected from the group consisting of:, i) an amorphous substance substantially composed of Si, M, C and O, ii) crystalline ultrafine particles substantially composed of .beta.-SiC, C, MC, a solid solution of .beta.-SiC and MC and/or MC1-x, and having a particle diameter of not more than 500 .ANG. or alternatively, an aggregate of the crystalline ultrafine particles, amorphous SiO2 and …
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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 July 19, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 19, 2011.
- 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
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.