Electrolytic capacitor
CA 1208320 A · Owner: Sprague Electric Company · Inventors: Fresia, E. James; Buczkowski, Gary J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Dicclosure A wound foil electrolytic capacitor contains an electrolyte of a solution of 3 to 10 wt% ammonium benzoate, 4 to 16 wt% water, and 75 to 93 wt% ethylene glycol which has a resistivity of 385 to 620 ohm-cm. A nitro compound and a phosphate may also be present. The capacitor is capable of operating above 100V and above 85°C. The electrolyte is particularly suited for operation above 200V at 95°C and higher.
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
- Granted July 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
- 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.