Conditioning shampoo compositions containing select hair conditioning esters
CA 2250386 C · Owner: Inman, Everett Junior · Inventors: Inman, Everett Junior; Coffindaffer, Timothy Woodrow
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are aqueous conditioning shampoo compositions comprising an anionic surfactant component; an organic, cationic hair conditioning polymer; and , from about 0.1 % to about 1.0 % by weight of a water-insoluble synthetic , ester having a viscosity of from about 1 to about 300 centipoise and which , conforms to either of formulae (I) and (II) wherein R1 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group having from 7 to 9 carbon atoms; n is a positive integer having a value of from 2 to 4; R2 is an alkyl alkenyl, hydroxyalkyl or hydroxyalkenyl group having from 8 to 10 carbon atoms; and Y is an alkyl, alkenyl, or a hydroxy or carboxy substituted alkyl or alkenyl having from …
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 March 18, 1997 and granted January 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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.