Functional fragrance precursor
CA 2839576 C · Owner: Colgate-Palmolive Company · Inventors: Smith, Daniel W.; Farooq, Amjad; Wu, Donghui
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a fragrance precursor compound comprising one or more of the compounds derived from the reaction of X-OH and an aldehyde or ketone said fragrance precursor compounds being of the formula X-O-C(R)(R*) (R**) wherein R is a C6-24 alkyl group a C6-24 aralkyl group or a C6-24 alkaryl group; R* is H or a C6-24 alkyl group a C6-24 aralkyl group or a C6-24 alkaryl group; R** is O-H or O-X; O-X representing a moiety derived from X-OH and wherein X-OH is a material containing at least one hydroxyl group chosen from surfactants containing at least one hydroxyl group fabric softener materials containing at least one hydroxyl group softener precursor ester amines …
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 November 19, 2003 and granted May 26, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2025.
- 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.