Shampoo compositions with cationic polymers
CA 2421028 A1 · Owner: Nakamura, Kiichiro · Inventors: Wells, Robert Lee; Yang, Jian-Zhong; Nakamura, Kiichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are hair conditioning shampoo compositions comprising: a) from about 5 % to about 50 % by weight, of a surfactant component selected from the group consisting of anionic surfactants, amphoteric surfactants or a combination of , anionic and amphoteric or zwitterionic surfactants where the amphoteric surfactants are anionic or zwitterionic at the pH of the composition; b) from about 0.01 % to about 5 %, by weight, of a water sluble organic catinic , polymer hair conditioning agent having a cationic charge density from about 0.1 meq/gram to about 1.2 meq/gram and wherein said water solube organic, catinic polymer hair conditioning agent has a molecular weight greater than …
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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 August 20, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2023.
- 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.