Supply air heating device and supply air heating method
CA 2277040 A1 · Owner: Nippon Furnace Kogyo Kaisha, Ltd. · Inventors: Yasuda, Tsutomu; Yoshikawa, Kunio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A supply air heating device (1) heats an air flow of relatively low temperature to feed a heated supply air to a high temperature air introduction device, into which a high temperature air flow should be introduced. The supply air heating device comprises heat exchangers (11 12) provided with , flow passages, which permit passage of low temperature supply air divided , flow regions (15) for dividing a heated supply air flow (H) heated by the heat exchangers into first and second heated supply air divided flows (H1 H2), and , combustion regions (13, 14) for causing combustion reaction of inflammable substances in the presence of the first heated supply air divided flow (H1). Heated …
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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
- Filed January 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2020.
- 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.