Detergent compositions
CA 2291631 C · Owner: The Sun Products Corporation · Inventors: Liem, Seeng Djiang; Lloyd, John; Emery, William Derek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A particulate detergent composition or component of high bulk density (at least 600 g/l), comprising at least 10 % by weight of detergent surfactant and from 10 to 70 % by weight of detergency builder is composed of at least two, and preferably at least three different granular components: (i) granules comprising at least 60 % by weight of anionic surfactant (ii) granules , comprising at least 20 % by weight of nonionic surfactant and less than 10 % , by weight of aluminosilicate (iii) optionally, granules comprising detergency builder.
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 May 11, 1998 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2020.
- 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.