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Expired Canadian patentCanada

Gas turbine installation

CA 2278034 C · Owner: Tajima, Katsuhiko · Inventors: Tateishi, Akitaka; Higuma, Katsutoshi; Tajima, Katsuhiko

CIPO record

Overview

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

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Abstract From the Canadian patent

According to the present invention, the shape of a passage in an intake-air duct communicated with the suction side of the intake-air filter is regulated so that snow is heaped up in the intake-air duct and accordingly, the volume of snow reaching the intake-air filter is reduce in order to prevent the intake-air filter from clogging and to prevent the flow rate of intake-air into a gas turbine from being lowered. In order to attain the above-mentioned purpose there is provided, according to the present invention an air-intake method for a gas turbine in which intake-air 18 taken from a fresh air intake port is fed downward through a second intake-air duct in a substantially vertical …

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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 July 19, 1999 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 19, 1999
GrantedJune 25, 2002
Term endedJuly 19, 2019
Patent numberCA 2278034 C
Classification (IPC)F02C7/04 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedJuly 19, 1999Patent grantedJune 25, 2002Term endedJuly 19, 2019

Sources & verification

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