Boron carbide-reactive metal cermets having microstructure tailored by post-densification heat treatment
CA 2054834 A1 · Owner: The Dow Chemical Company · Inventors: Pyzik, Aleksander J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Boron carbide-reactive metal cermets can be prepared by consolidating a mixture of boron carbide powder and a particulate source of a metal that reacts with boron carbide to produce dense, soft cermets in, near net shape. The cermets can be hardened to produce a final multiphase microstructure having increased fracture toughness and hardness by a post-densification heat treatment.
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 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.