Oil-filled capacitor
CA 1340754 C · Owner: Endo, Keiji · Inventors: Sato, Atsushi; Kawakami, Shigenobu; Endo, Keiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved oil-filled capacitor which is excellent in low temperature characteristics. The oil-filled capacitor is composed of at least partially a plastics material and is impregnated with an electrical insulating oil which oil is characterized in that it comprises 0 to 100% by weight of a fraction A containing components boiling within the range of 268 to 275°C (atmospheric pressure basis) and 100 to 0% by weight of a fraction B containing components boiling within the range of 280 to 310°C (atmospheric pressure basis) which fractions are recovered by distillation from the heavy by-product oil that is produced in the preparation of ethylbenzene by alkylating benzene with ethylene in the …
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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
- Granted September 21, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 21, 2016.
- 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.