Microwave-absorptive composite
CA 1295541 C · Owner: The Yokohama Rubber Co. Ltd. · Inventors: Yamazaki, Hajime; Sugihara, Kazuhiro; Hiza, Misao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave absorptive composite suitable for use in ships, aircrafts and the like comprises: an outermost layer of a thermosetting resin-impregnated, fibrous sheet; an intermediate layer of a normally liquid carbonblack-, containing silicone rubber sheet; and an innermost layer of a reinforced thermosetting resin sheet the three layers, being integrally laminated in that order. The silicone rubber is curable at room temperature or with heat. The composite is absorptive over a wide wave band excellent in, heat resistance and structural strength and free from deformation.
Read the whole patent
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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.