Process for making high density detergent composition using conditioned air
CA 2229482 C · Owner: The Procter & Gamble Company · Inventors: Capeci, Scott William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing high density detergent agglomerates having a density of at least 650 g/l is provided. The process includes the steps of: (a) agglomerating an aqueous surfactant paste and dry detergent material in a mixer/densifier so as to form detergent agglomerates having a density of at least about 650 g/l; and (b) inputting air into the mixer/densifier while agglomerating the aqueous surfactant paste and the dry detergent material wherein the air has a relative humidity below the equilibrium relative humidity of the detergent agglomerates such that at least a minor amount of water from the surfactant paste is absorbed by the air.
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 6, 1996 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 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.