Use of oxidised polysaccharides in detergent compositions
CA 2295481 A1 · Owner: Timmermans, Johannes Wilhelmus · Inventors: Van De Wetering, Cornelis Gerardus; Visser, Hermanna Anthonia Angenita Helena; Timmermans, Johannes Wilhelmus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polycarboxy polysaccharides, in particular dicarboxymaltodextrins having a , molecular weight between 1,600 and 12,000 and having a degree of oxidation (DO) of 0.12-0.6 carboxyl groups per anhydromonose unit can be used as a , cobuilder, in particular as an anti-redeposition and soil dispersing agent in detergent compositions.
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 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 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.