Process for modifying the appearance of crystalline sodium chloride
CA 1071841 A · Owner: W.R. Grace And Co. · Inventors: Bragdon, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for preparing substantially noncajubg crystalline sodium chloride wherein the sodium chloride is treated with an effective amount of N-2-acetamide iminodiacetic acid or N,N-bis(2,2'-acetamido)glycine. The product crystalline sodium chloride is found to have a modified appearance as well as being substantially non-caking.
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 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.