Nonaqueous liquid detergent compositions containing bleach precursors
CA 2258666 C · Owner: Coosemans, Steven Jozef Louis · Inventors: Johnston, James Pyott; Meyer, Axel; Boutique, Jean-Pol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a liquid nonaqueous detergent composition comprising an alcohol alkoxylate nonionic surfactant and a bleach precursor having a Krafft point of at least 10 ~C, said surfactant and said precursor being present in a molar ratio of nonionic surfactant to bleach precursor of at least 2:1.
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 June 24, 1997 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 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.