Calcined serpentine as inorganic charge in sheet materials
CA 1160404 A · Owner: Societe Nationale De L'Amiante · Inventors: Lalancette, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided an improved non-woven fibrous felt material made up of fibers calcined, asbestos tailings as filler and an organic binder. The improved felt material possesses increased hot tensile strength over felt material made from noncalcined asbestos tailings or inert inorganic fillers.
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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2001.
- 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.