Liquid, aqueous concentrated alkylsulphate composition
CA 2063213 A1 · Owner: Broster, Phillip · Inventors: Broster, Phillip; Heywood, Frederick W.; Van Grieken, Madelinde G. F. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relatss to a liquid, aqueous concentrated alkylsulphate composition, comprising between 50 and 80 per cent by weight of active matter, the remainder being water and 0.1 to 15, per cent by weight, calculated on active matter of, a) an alcohol ethoxylate;, b) an alcohol ethoxysulphate; c) a polyethylene or polypropylene glycol; or d) the sulphated product of c);, as a viscosity regulator. D11/T1746FF
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 March 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2014.
- 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.