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Expired Canadian patentCanada

Air regulator for vehicles

CA 2235839 C · Owner: Mitsubishi Heavy Industries, Ltd. · Inventors: Noyama, Hideto; Hase, Tomoki; Kanno, Hideo

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The air regulator for vehicles of the present invention is provided with, within a casing, an evaporator which cools air a heater which reheats the air cooled by the evaporator and an, air mix damper which is disposed on the downstream side of the evaporator and on the upstream side of the heater and in close proximity thereto, and which regulates the amount of air passing through the heater; a heat reflecting surface is formed on the heater side of the air mix damper. By means of this it, is possible to prevent the thermal deformation of the air mix damper by reflecting the radiation from the heater side using the heat reflecting surface. Accordingly the sliding problems, of the air mix …

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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 April 24, 1998 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 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.
FiledApril 24, 1998
GrantedJuly 16, 2002
Term endedApril 24, 2018
Patent numberCA 2235839 C
Classification (IPC)B60H3/00 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedApril 24, 1998Patent grantedJuly 16, 2002Term endedApril 24, 2018

Sources & verification

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