Method for forming new preceramic polymers for sic and si3n4/sic systems
CA 1263797 C · Owner: Massachusetts Institute Of Technology · Inventors: Wood, Timothy; Seyferth, Dietmer; Yu, Yuan-Fu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming preceramic polymers using an organosilicon polymers containing Si-H repeat units by reacting it with alkali metal silylamids is disclosed. Preferably the, alkali metal silylamide is a polymeric alkali metal silylamide of the formula (R1SiHNH)a(R1SiN)b(R1SiHNM)cm (where a + b + c = 1; R1 is a lower alkyl group having from 1 to about 6 carbon atoms, a substituted or unsubstituted alkenyl group having from 2 to about 6 carbon atoms a substituted or, unsubstituted lower aryl group having from 6 to about 10 carbon atoms, a tri(lower)alkyl- or di(lower)alkylsilyl group or a di(lower)alkylamino group; M is an alkali metal or one-half equivalent of an alkaline earth metal; and n …
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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
- Granted December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.