Foaming agent for leave-on foaming cosmetic compositions
CA 2176458 C · Owner: Nambu, Takanori · Inventors: Nambu, Takanori; Chen, Yin-Jang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foaming agent comprising an amphoteric surfactant and an amine oxide which foams by being dispensed or sprayed and provides, improved foaming characterstics to leave-on foaming cosmetic compositions. In one preferred embodiment of the present invention the foaming agent is comprised in a hair mousse composition further comprising a solvent and optional polymer, preservative, and propellant. Hair mousse compositions comprising the foaming agent can be formulated in combination with a wide range of solvent preservatives, and, propellants.
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 11, 1994 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2016.
- 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.