Ribbed substrate for fuel cell electrode
CA 1194926 A · Owner: Kureha Kagaku Kogyo Kabushiki Kaisha · Inventors: Shigeta, Masatomo; Fukuda, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE OF THE INVENTION:, RIBBED SUBSTRATE FOR FUEL CELL ELECTRODE ABSTRACT OF THE DISCLOSURE:, A porous ribbed substrate for a fuel cell electrode is herein disclosed which has a ribbed layer on one side and a nonribbed layer on the other side, the non-ribbed layer having a bulk density smaller than the bulk density of the ribbed layer. The fuel cell electrode substrate has a porosity of 50 - 80% and good mechanical strength such as a bending strength of not less than 50 kg/cm2. A fuel cell prepared from the electrode substrate has excellent properties.
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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
- Granted October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
- 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.