Hair fixative composition containing an anionic polymer
CA 2443218 A1 · Owner: Ondeo Nalco Company · Inventors: Betts, Douglas E.; Hessefort, Yin Z.; Carlson, Wayne W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cosmetically acceptable hair fixative composition comprising from about 0.1 to about 10 weight percent, based on polymer solids of an anionic polymer, wherein the anionic polymer is composed of from about 10 to about 80 mole percent of 2-acrylamido-2-methyl-1-propanesulfonic acid or a base addition salt thereof and from about 90 to about 20 mole percent of one or more anionic or nonionic monomers and a method of fixing hair are disclosed.
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 March 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2024.
- 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.