Clear cosmetic stick composition with 2-methyl-1,3-propanediol
CA 2233348 C · Owner: Vu, Tuan M. · Inventors: Utaegbulam, Chinyere E. Onyekachi; Sane, Jayant N.; Coe, Craig M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Soap-based clear cosmetic sticks are disclosed which include 2-methyl-1,3propanediol in the composition to increase the set temperature and also the , stick hardness. A typical composition of the present invention comprises about 20 to 50 %, preferably 28 to 46 %, of 2-methyl-1,3-propanediol about 3 to 12 , %, preferably 4 to 8 % of an alkali metal salt of a C12-22, preferably C14- 18, fatty acid, about 10 to 42 %, preferably 18 to 30 % of a polyhydric , alcohol other than 2-methyl-1,3-propanediol and about 5 to 35 %, preferably , 15 to 30 % water. To achieve the highest set temperature the composition should also contain an alkali metal salt preferably a sodium or potassium , salt …
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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 October 15, 1996 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2018.
- 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.