Apparatus and method for production of refractory metal from a chloride thereof
CA 1202182 A · Owner: Ishizuka, Hiroshi · Inventors: Ishizuka, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for production of refractory metal from a chloride thereof, comprising a conversion assembly and a purification assembly, the former in turn comprising: an elongated vertical cylindrical member with an open top and a closed bottom, another cylindrical member open at each end but having a grid plate detachably supported at a bottom thereof, said cylindrical members consisting of axially arranged outer and inner vessels respectively, an, annular top cover joined on respective upper ends of said outer and inner vessels, a closure joined over a central bore of said top cover, a furnace means surrounding said outer vessel, a tube means which extends through the closure …
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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
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Timeline
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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.