Perhydrosiloxane copolymers and their use as coating materials
CA 2050202 A1 · Owner: Dow Corning Corporation · Inventors: Weiss, Keith Darren; Baney, Ronald Howard; Frye, Cecil Leonard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to soluble perhydrosiloxane copolymers of the formula H2SiOxHSiO3/2y wherein the mole fractions x and y total 1. In addition the present, invention relates to the use of these novel copolymers as coating materials, especially for use on electronic devices.
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 August 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2013.
- 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.