Dioxolane functional silicon compounds and method for their preparation and use
CA 2019188 C · Owner: Dow Corning Corporation · Inventors: Revis, Anthony; Lo, Peter Yin Kwai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating textiles in order to increase the water absorptivity of the textiles involving contacting the textiles with an effective amount of a dioxolane functional organosilicon compound. Representative of the dioxolane or ketal functional organosilicon compounds employed are sym(2,2-dimethyl-4-methyloylpropyl-1,3dioxolane) disiloxane and sym(2,2-dimethyl-4-methyloylpropyl- 1,3-dioxolane) polydimethylsiloxane.
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 June 21, 1990 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2012.
- 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.