Stable, isotropic liquid laundry detergents
CA 1298752 C · Owner: Weller, Jeanne M. · Inventors: Harrison, Kenneth A.; Weller, Jeanne M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
22749-344, D.N. 7407A, STABLE, ISOTROPIC LIQUID LAUNDRY DETERGENTS ABSTRACT OF THE DISCLOSURE, Stable, isotropic liquid laundry detergents with, good detergency effective microbicidal and low irritancy properties comprising anionic, nonionic and cationic surfactants and an alkali metal benzoate in an aqueous vehicle. The anionic surfactant has the formula: , (where R is C12-C15 alkyl m is 1 to 4 and M is an alkali, metal cation) and is contained 0.2 to 3.0 wt.%; the cationic surfactant has the formula, X-, (where R1 and R2 are lower-alkyl; R3 is C8-C16 alkyl; R4 is C8-C16 alkyl or benzyl and X is halide) and is contained 3.8 to 7 wt.%; the nonionic surfactant has the formula: or , (where R5 …
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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
- Granted April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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
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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.