Nonaqueous bleach-containing liquid detergent compositions
CA 2199817 C · Owner: The Procter & Gamble Company · Inventors: Hunter, Kathleen Brenner; Kong-Chan, Josephine Ling
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are nonaqueous, bleach-containing liquid laundry detergent compositions which are in the form of a suspension of particulate material including peroxygen bleaching agent and an alkyl sulfate anionic surfactant dispersed in a liquid phase containing an alcohol ethoxylate nonionic surfactant and a nonaqueous, low-polarity organic solvent. Such compositions provide especially desirable cleaning and bleaching of fabrics laundered therewith and also exhibit especially desirable chemical and phase stability.
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 September 8, 1995 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2017.
- 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.