Acylated citrate esters as peracid precursors
CA 2124787 C · Owner: The Procter & Gamble Company · Inventors: Hardy, Frederick E.; Willey, Alan D.; Scialla, Stefano
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 acylated citrate esters to be used as peracid precursors in a bleaching or disinfecting operation. The present invention encompasses the use of these acylated citrate esters granular or liquid compositions comprising the acylated citrate esters. Activating compositions are described as well as activated bleaching compositions.
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 December 4, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2014.
- 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.