Method of crosslinking polysilazane polymers
CA 2112876 A1 · Owner: Zank, Gregg Alan · Inventors: Zank, Gregg Alan; Bujalski, Duane Ray; Barnard, Thomas Duncan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes a novel method for crosslinking polysilazane polymers having Si-H or N-H bonds. The method comprises mixing the polysilazane with a silazane crosslinker having at least 2 boron functional groups which can react with the Si-H or N-H bonds of the polysilazane and then facilitating crosslinking.
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 5, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2016.
- 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.