Patent Yard Sign in
Expired Canadian patentCanada

High power density evaporatively cooled ion exchange membrane fuel cell

CA 1297940 C · Owner: United Technologies Corporation · Inventors: Mcelroy, James F.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

High Power Density Evaporatively Cooled Proton Exchange Membrane Fuel Cell, A method of evaporatively cooling an ion exchange membrane electrolyte fuel cell is disclosed. Liquid water mist 3 is introduced into the anode 6. A desiccant material 8 directs the liquid water mist 3 to the ion exchange membrane 12. Evaporation of a portion of both the product water and the supplied liquid water cools the cell and eliminates the need for a separate cooling chamber, resulting in a cell with high packing density, high current density capability and a large power to weight ratio. H-1804se, - 14 -

Read the whole patent

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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • 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 21, 1988
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297940 C
Classification (IPC)H01M8/04

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 21, 1988Patent grantedMarch 24, 1992Term endedMarch 24, 2009

Sources & verification

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