Fibrous fosterite and its use as insulating material
CA 1329980 C · Owner: Delvaux, Pierre · Inventors: Gouin, Marcel; Delvaux, Pierre; Desrosiers, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a fibrous-like synthetic forsterite obtained by the calcination of chrysotile asbestos fiber at a temperature of from 650° to 1450°C said synthetic forsterite being, characterized by having an MgO:SiO2 ratio lower than 1.1 a raw loose, density of from 3 to 40 pcf a thermal conductivity "k" factor of from 0.25 to 0.40 BTU. In / Hr. °F . Ft2 and a fusion point of from 1600° to 1700°C which is useful as an insulating material.
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 June 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 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.