Catalyzed process for glucamide detergents
CA 2092182 C · Owner: Scheibel, Jeffrey John · Inventors: Connor, Daniel Stedman; Scheibel, Jeffrey John; Kao, Ju-Nan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for manufacturing a linear glucamide reacting an N-alkylglucamine,eg. Nmethylglucamine, a fatty ester, e.g. coconut methyl ester and a catalyst selected from trilithium phosphate,trisodium phosphate tripotassium phosphate,tetrasodium pyrophosphate,tetrapotassium phosphate pentasodium tripoloyphoshate, pentapotassium tripolyphosphate,lithium hydroxide sodium hydroxide, potassium hydroxide, calcium hydroxide lithium carbonate, sodium carbonate, potassium carbonate disodium tartrate, sodium potassium tartrate,trisodium trisodium citrate tripotassium citrate, sodium basic silicates potassium basic silicates, sodium basic aluminosilicates potassium basic aluminosilicates, and …
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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
- Filed September 25, 1991 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2013.
- 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.