Tablet detergent compositions
CA 2318065 A1 · Owner: Boskamp, Jelles Vincent · Inventors: Van Der Kraan, Marcel; Gordon, James William; Appel, Peter Willem
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Detergent tablets for use in fabric washing are made by mixing: (i) particles which contain non-soap organic surfactant and other materials especially , detergency builder, with (ii) material which is other than soap or organic surfactant and which has a solubility in water of at least 10gm/litre at 20 ~C, followed by compacting the mixture into a tablet or a region of a tablet using an applied pressure in a range from 3.0 to 35 MPa. Such a pressure used , with the specified mixture, leads to tablets with good strength which also disintegrates with satisfactory speed.
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 February 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2021.
- 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.