Stabilized polysiloxane fluids and a process for making the same
CA 2003864 A1 · Owner: Piskoti, Charles · Inventors: Kendall, Steven S.; Piskoti, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organopolysiloxane fluids, thiofunctional polysiloxane fluids or blends of organopolysiloxane fluids and thiofunctional polysiloxane fluids are stabilized against degradation in the presence of kaolin clays at elevated temperatures by adding an epoxy containing compound.
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 November 24, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
- 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.