Detergent compositions containing mixtures of crystallinity-disrupted surfactants
CA 2297161 C · Owner: Vinson, Phillip Kyle · Inventors: Burckett-St. Laurent, James Charles Theophile Roger; Cripe, Thomas Anthony; Kott, Kevin Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning composition comprising: a) about 0.1 % to about 99.9 % by weight of said composition of an alkylarylsulfonate surfactant system comprising from about 10 % to about 100 % by weight of said surfactant system of two or more crystallinity-disrupted alkylarylsulfonate surfactants of the formula: (B-Ar-D)a(Mq+)b (defined herein after); and b) from about 0.00001 % to about 99.9 % by weight of said composition of cleaning composition adjunct ingredients at , least one of which is selected from the group consisting of: i) detersive enzymes; ii) organic detergent builders; iii) oxygen bleaching agent; iv) bleach activators; v) transition metal bleach catalysts; vi) oxygen transfer …
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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 July 20, 1998 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2020.
- 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.