Fuel cell separator and method for manufacturing the same
CA 2379007 C · Owner: Nichias Corporation · Inventors: Suzuki, Shinzaburou; Nagai, Kouji; Segawa, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel cell separator containing conductive material and epoxy resin is provided. In the fuel cell the epoxy resin is made of solid epoxy resin whose epoxy equivalent weight is 300-500. Further according to another fuel cell separator raw materials containing not lower than 60 weighty of conductive material and 34-40 weighty of resin material are kneaded and adjusted to have a flow index of 5-20%. A kneaded compound is compression- molded so that a fuel cell separator is obtained.
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
- Filed March 27, 2002 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2024.
- 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.