Pro-perfume compositions used in cleaning or fabric treatment products
CA 2463031 A1 · Owner: Smets, Johan · Inventors: Smets, Johan; Laudamiel, Christophe; Trujillo, Rafael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are pro-perfume compositions comprising the Michael Addition reaction product of a primary and/or secondary amine compound with an unsaturated ester, acid or nitrile perfume compound. Pro-perfumes made from this selected type of reaction product provide a desirable and prolonged odor benefit to surfaces, e.g. fabrics and hard surfaces contacted therewith. , Such pro-perfumes are also utilized in a wide variety of substrate-treating products and methods.
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 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2024.
- 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.