Heat treating apparatus and method of operating heat treating apparatus
CA 1290149 C · Owner: The Furukawa Electric Co. Ltd. · Inventors: Yoshikai, Terunao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat treating apparatus which comprises a core tube for containing a material to be treated, a heating furnace surrounding the core tube, core tube gas supply means for supplying gas into the core tube, furnace gas supply means for supplying gas into a furnace body of the furnace differential pressure, detecting means for detecting the differential pressure between the pressure in the core tube and the gas pressure in the body and differential pressure regulating means for regulating the differential pressure between the gas pressure in the core tube and the gas pressure in the body on the basis of a differential pressure signal from the detecting means. The apparatus is operated by a …
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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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
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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.