Automatic dishwashing detergents comprising .beta.-ketoester pro-fragrances
CA 2264096 A1 · Owner: Costa, Jill Bonham · Inventors: Sivik, Mark Robert; Severns, John Cort; Costa, Jill Bonham
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 Automatic Dishwasher Detergent (ADD) compositions having a fragrance delivery system which comprises .beta.ketoester pro-fragrances which are capable of releasing fragrance raw materials which provide an aestetically pleasurable benefit to tableware as well as the automatic diswashing appliance. The present invention also relates to methods for providing lasting fragrance to dishware and to automatic diswashing appliances.
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 August 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.