Electrolytic capacitor and multi-anodic attachment
CA 2329184 A1 · Owner: Waytashek, Brian V. · Inventors: O'Phelan, Michael J.; Tong, Robert R.; Christenson, Luke J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-anodic aluminum electrolytic capacitor includes and electrical connection to the multiple porous (e.g. tunnel-etched) anodes (215A-C) in an anode stack using a single anode tab (205) that is attached only to a first anode. Other anodes are electrically coupled to the anode tab through the first anode. Anodes in the anode stack are in intimate physical and electrical contact with other such anodes as a result of layering effected by planar stacking or cylindrical winding. The need for separate tabs to different anode layers is eliminated or at least minimized thereby reducing capacitor volume, increasing capacitor reliability and reducing the cost and complexity of the …
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 April 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 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.
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.