Electrical conductive substrate
CA 2419783 A1 · Owner: Segit, Paul N. · Inventors: Segit, Paul N.; Lambert, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a flexible pyrolyzed carbon fiber matrix suitable for use as a fuel cell electrode substrate. The product is characterized by controlled microporosity and is at least partially hydrophobic. The product is made by a continuous high speed, high volume , manufacturing process which permits wide variability in such parameters as basis weight (50-150 gm/m2), caliper (140-400 m2 at 5 Kpa) density (0.300-, 0.480 gm/cm3), and resistivity (200-1000 mOhm-cm through plane and 15-65 mOhmcm in plane). This matrix, unlike current electrode substrates is flexible , and can be made as roll goods. Comparative testing in fuel cell applications has demonstrated that this …
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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 September 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2023.
- 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.