Cleaning compositions
CA 2292490 A1 · Owner: Unilever Plc · Inventors: Boskamp, Jelles Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cleaning compositions in the form of tablets containing surfactant and detergency builder, especially for use in fabric washing also contain a water-, insoluble, water-swellable polymeric material which has an average particle dimension of at least 400 micrometres. Such material may be cellulosic in nature and promotes disintegration of the tablets in water at the time of use.
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 June 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 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.