Hard surface detergent compositions
CA 2107203 C · Owner: Maile, Michael S. · Inventors: Michael, Daniel W.; Maile, Michael S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Detergent compositions with excellent spotting/filming characteristics comprising propylene glycol/ethylene glycol block copolymer nonionic detergent surfactant preferably in a, surfactant mixture with a nonionic detergent surfactant having a conventional hydrocarbon hydrophobic group and a mixed propylene glycol/ethylene glycol hydrophilic group; optional hydrophobic cleaning solvent; and optional suds control system preferably comprising fatty acid and anionic sulfonated and/or sulfated detergent surfactant. The compositions are preferably in the form of aqueous liquids and preferably have monoethanolamine and/or beta-aminoalkanol present.
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 28, 1993 and granted November 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2015.
- 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.