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Canadian application, no grantCanada

Inter-region thermal complementary system by distributed cryogenic and thermal devices

CA 2406243 A1 · Owner: Kawamura, Kuniaki · Inventors: Kawamura, Kuniaki; Fujima, Katsumi; Matsuda, Junji

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An inter-region thermal complementary (combination of heat supply with exhaust heat) system capable of complementing a heat by forming an endless loop so as to complement each other the heat produced in the regions such as plants and areas, performing a heat transfer without performing the forced circulation of water by a pump in the endless loop independently of the circumferential diameter of an annular endless water channel i.e. the areas of the regions , to be supplied with heat wherein an endless multiplex helical loop sealed with liquid or slurry fluid body forms the temperature zones different from each other for each loop without being forcibly circulated by the pump 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

  • Filed December 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 12, 2001
GrantedNo grant recorded
Term endedDecember 12, 2021
Patent numberCA 2406243 A1
Classification (IPC)F25D17/02

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedDec 12, 2001Term endedDec 12, 2021

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.