Method of dispersing calcium carbonate
CA 1069800 A · Owner: Betz Laboratories Ltd. · Inventors: Davis, Philip S.; Volgenau, Lewis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE: COMPOSITION AND ITS USE IN HIGH pH SYSTEMS Abstract of the Invention, This invention comprises a composition and its use in dispersing calcium carbonate in high pH systems. By maintaining the calcium carbonate dispersed, scaling in such systems is alleviated. The composition consists essentially of a combination of an organo phosphonate having a specific formula and an amino-organo phosphonate having a specific formula. -1-
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 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.