A laundry pretreater having enhanced oily soil removal
CA 2120375 A1 · Owner: Strandburg, Gary M. · Inventors: Tucker, Christopher J.; Klier, John; Strandburg, Gary M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A translucent solid or gel pre-spotting composition containing a single phase liquid microemulsion at a processing temperature of 50°C to 80°C. The single phase microemulsion comprises a gelling agent, one or more surfactants; a solvent or a mixture of solvents which may contain no more than about 2 weight percent water at 25°C when the organic solvent is saturated with water in absence of surfactants or other additives; and water in amounts greater than 15 percent by weight and less than 60 percent by weight of the composition. The microemulsion before solidifying may be oil continuous, water continuous or, bicontinuous.
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 March 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 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.