Plasticized high water content cosmetic gel composition and pencil therefore
CA 2205880 C · Owner: Crawford, Wista M. · Inventors: Cunningham, John; Crawford, Wista M.; Sanders, Angie W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plasticized high water content cosmetic gel that will be sharpenable when used as a core inside of a sharpenable pencil barrel. The gel essentially comprises by weight, about 25 - 42 % water; about 25- 35 % of a polyol or aliphatic diol vehicle such as a butylene glycol; about 4 - 12 % sodium stearate; about 0.1 - 2 % of a carboxylated acid ester plasticizer; about 4 - 28 % of a colorant; and about 0.1 - 1 % of a surfactant. To reduce syneresis, adding about 1 percent or less a viscosity increasing agent is effective. For water resistance when the cosmetic gel is applied to a user's skin adding about 5 - 10 % of a, styrene acrylic polymer waterproofing agent is effective and does not, …
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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 May 23, 1997 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2019.
- 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.