2,4,4-trisusbtituted tetrahydro pyranyl esters and organoleptic uses thereof
CA 2007940 C · Owner: Sprecker, Mark A. · Inventors: Greene, Roger E.; Sprecker, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described are 2,4,4-trisubstituted tetrahydro pyranyl esters defined according to the structure: . wherein R1 represents methyl or ethyl and R2 represents C2-C4 straight chain or branched chain alkyl or alkenyl and organoleptic uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles including, but not limited to bleach compositions solid or, liquid anionic, cationic, nonionic or zwitterionic detergents perfumed polymers, fabric softener compositions fabric, softener articles, cosmetic powders and hair preparations.
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 January 17, 1990 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2012.
- 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.