A hair care composition comprising a polypropylene glycol and an ester oil
CA 2382391 A1 · Owner: The Procter & Gamble Company · Inventors: Venkateswaran, Ananthanarayan; Yang, Jian-Zhong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hair care compositions include a polypropylene glycol an ester oil, and a gel , matrix comprising a cationic surfactant a solid fatty compound, and water. , Hair care compositions also include a polypropylene glycol an ester oil , selected from a pentaerythritol ester oil a trimethylol ester oil, and , mixtures thereof and a suitable carrier. The polypropylene glycol has a weight average molecular weight of from about 200 g/mol to about 100,000 g/mol. The HLB value of the ester oil is less than about 4.
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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 September 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2021.
- 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
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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.