Power capacitor and use and method related thereto
CA 2396248 C · Owner: Dowling, Kenneth · Inventors: Reiner, Eva; Dowling, Kenneth; Laihonen, Sari
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a power capacitor for high voltage and comprises at least one capacitor element (2a-2d) enclosed in a container (1). A space is formed between each capacitor element (2a-2d) and the container (1). The object of the invention is to be able to handle problems concerning oil leakage in such a capacitor. According to the invention said space is filled up by a dielectric fluid (10) comprising a gelling component. Because a gel is used instead of oil, the risk of oil leakage is eliminated. The invention also relates to use of a gel in such a capacitor and to a method for manufacture of the invented capacitor.
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 January 15, 2001 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 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.