Canadian application, no grantCanada
Electrode made of flexible graphite composite
CA 2336735 A1 · Owner: Graftech Inc. · Inventors: Mercuri, Robert Angelo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flexible graphite sheet (10) having embedded ceramic fibers (3a) extending from its opposite planar surfaces (22, 24) into the sheet to provide permeability of the sheet to gases so that it is useful as an electrode in electrochemical fuel cells.
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 July 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 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 6, 1999
GrantedNo grant recorded
Term endedJuly 6, 2019
Patent numberCA 2336735 A1
Classification (IPC)H01M4/96 +2 more
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.