Hard surface detergent compositions
CA 2129057 C · Owner: Michael, Daniel W. · Inventors: Michael, Daniel W.
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 nonionic detergent surfactant preferably having a conventional hydrocarbon hydrophobic group and polyalkoxylate hydrophilic group; polyalkoxylate polycarboxylate surfactant/builder containing hydrocarbon hydrophobic group polyalkoxylate moiety, and polyanionic moieties that are carboxyl groups except for one optional sulfate or sulfonate group; optional hydrophobic cleaning solvent and/or polycarboxylate detergent builder; 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 …
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 July 28, 1994 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2016.
- 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.