Surface treatment of asbestos fibers
CA 1062096 A · Owner: Johns-Manville Corporation · Inventors: Bodycomb, Frederick M. (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to asbestos fibers that have been treated or contacted with a combination of a phosphate, or acid thereof, and a nonfoaming anionic dispersant to improve their filtration characteristics, and to the manufacturer of asbestoscement products using the treated asbestos fibers.
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 September 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 11, 1996.
- 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.