Detergent component or composition with protective coating
CA 2260933 C · Owner: Eggersmann, Markus · Inventors: Eggersmann, Markus; Mckee, Zoe; Schamp, Koen Mariette Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates the application of certain coatings to particulate detergent components or compositions to improve free-flow properties, improve dispensing and avoid dust formation. This is achieved by a two-step coating process, wherein the first coating step comprises the process of mixing the detergent composition or component with a finely divided particulate material which is preferably aluminosilicate and the second , coating step comprises the process of applying a coating agent. Suitable coating agents comprise from 5 % to 95 % by weight of cellulosic polymer; from 5 % to 95 %, by weight of sugar; and optionally from 0 % to 30 % by weight of , plasticizer.
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 July 1, 1997 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 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.