The use of polyether hydroxycarboxylate copolymers in textile manufacturing and treating processes
CA 2293058 A1 · Owner: Carrier, Allen M. · Inventors: Carrier, Allen M.; Rodrigues, Klein A.; Hazlewood, Michael C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of polyether hydroxycarboxylate copolymers in textile manufacturing and, treating processes. The polyether hydroxycarboxylate copolymer has the structure, (see formula I), wherein M+ is a cation wherein M is independently selected from the group consisting of, hydrogen, ammonia, alkali metals alkaline earth metals, zinc, copper, organic amines, amino acids, and amino saccharides; R1 is the residue of an ethylenically unsaturated, comonomer having at least one functional group which is selected from the group, consisting of carboxylic acid, sulfonic acid and phosphonic acid; R2 and R3 are, independently selected from the group consisting of hydrogen and a , substituted or, …
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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 December 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.