Process for making a low density detergent composition
CA 2268057 C · Owner: Kandasamy, Manivannan · Inventors: Nakamura, Yuji; Kandasamy, Manivannan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-tower process for preparing a granular detergent composition having a low density of less than 600 g/l is provided. The process comprises the steps of: (a) mixing an anionic surfactant paste comprising from about 35 % to about 85 % anionic surfactant and from about 15 % to about 65 % water with a sufficient amount of a particulate water absorbing material to form a solid mass having penetration value of from about 75 gf to about 4,000 gf then (b) agglomerating the solid , mass from the step (a) and an amount of one or more other detergent ingredients in a mixer so as to produce agglomerates having an anionic surfactant content of from about 12 % to about 60 %.
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 October 4, 1996 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2018.
- 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.