Laundry pre-treatment or pre-spotting compositions
CA 2345693 A1 · Owner: Mattia, Paul J. · Inventors: Mattia, Paul J.; Wiseth, Wendy M.; Levitt, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pre-spotting or pre-treating composition for a soiled laundry item comprises hydrophillic ethoxylate surfactant with less than two moles of ethylene oxide or a or blend thereof with at leat one further surfactant composition to give a HLB value of about 7-12. The treatment composition can be used in a liquid or solid form and can be applied to individual laundry items in the form of a solid stick or liquid spray prior to introduction to the laundry machine. Laundry items can also be contacted in the laundry machine with the pre-spot or pre-treatment composition in the form of an aqueous presoak preflush, prewash, or other step prior to the cleaning step.
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, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2021.
- 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.