Preparation and use of alkyleneoxysilane compositions
CA 2196232 C · Owner: Linder, Loren · Inventors: Linder, Loren; Zazyczny, Joel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to water soluble silane compositions that are essentially alcohol free comprising compounds of the structure:, (Ia) (RO) 3-X (Ho)xSi(CH2)3(OCH2CH2)bOH (IIa) {(RO) 2-y (Ho)ySi(CH2)3(OCH2CH2)bO}z wherein x ranges from 1 to 3, b ranges from 1 to 30 y is 0 or 1, and z ranges from 1 to 3, and R is an aryl or alkyl having from 1 to 10 carbon atoms. The invention further comprises methods for forming such compounds and for their use in preparing water soluble silane compositions by reaction with relative insoluble silane compounds terminated in functional groups selected from the group comprising epoxies, vinyls, mercaptos and acrylates.
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 January 29, 1997 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 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.