Heat-mediated conditioning from leave-on hair care compositions containing silicone
CA 2304574 C · Owner: Crudele, Joanne · Inventors: Milczarek, Pawel; Kamis, Kimberly; Bhatt, Darshna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In brief, the present invention is directed to a method for conditioning hair which comprises: (a) applying to hair a leave-on composition comprising: (1) a nonvolatile, silicone conditioning agent; (2) a resin; and (3) a carrier; (b) applying heat via a heating appliance to the composition treated hair to dry or style the hair and wherein a reduction in the bending modulus caused by the silicone conditioning agent is at least 1.00 % even when offset by an , increase in bending modulus caused by the presence of a resin and wherein the , method of the invention results in the deposition on the hair of at least 30 microgram silicone/1g of hair.
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 September 30, 1998 and granted November 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2020.
- 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.