Expired Canadian patentCanada
Niobium-based capacitor anode
CA 2420249 C · Owner: Schnitter, Christoph · Inventors: Reichert, Karlheinz; Schnitter, Christoph
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an anode comprising a niobium-based resistive layer containing , niobium metallic core, a conductive niobium suboxide layer and a dielectric resistive layer made , of niobium pentoxide.
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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 August 14, 2001 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 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.
FiledAugust 14, 2001
GrantedJune 21, 2011
Term endedAugust 14, 2021
Patent numberCA 2420249 C
Classification (IPC)H01G9/04 +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.