Waxless composition for cleaning and polishing acrylic and glass surfaces
CA 2198813 C · Owner: Auto-Chem Inc. · Inventors: Dagenais, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a waxless composition for cleaning and polishing acrylic and glass surfaces which consists of a water-in-oil emulsion comprising water, naphtha mineral spirits, an abrasive an, anti-static agent, a thickening agent dimethoxysilyl-, dimethylamino-ethylaminopropyl siloxane an aminofunctional, siloxane capable of reacting with the dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane to form a cross-linked siloxane film and at least one emulsifying agent having hydrophilic functional groups. The dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane and aminofunctional siloxane are sufficiently diluted to prevent reaction with one another in the emulsion so that when …
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 February 28, 1997 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2019.
- 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.