Skin care composition containing an anionic polymer
CA 2505196 A1 · Owner: Nalco Company · Inventors: Betts, Douglas; Brandt, Loralei; Carlson, Wayne M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cosmetically acceptable composition for treating skin comprising about 0.1 to about 20 weight percent, based on polymer solids of an anionic polymer , composed of from about 10 to about 80 mole percent of 2-acrylamido-2-methyl-lpropanesulfonic acid or a base addition salt thereof and from about 90 to about 20 mole percent of one or more anionic or nonionic monomers.
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
- Filed October 15, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2025.
- 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.