Method and equipment for treating electrostatic field and electrode used therein
CA 2255689 C · Owner: Ishikawa, Yasuo · Inventors: Ito, Akinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrode plate (37) is located in a refrigerator while being insulated , from the inner wall of the refrigerator and an object of treatment is placed , on the electrode plate (37) also while being insulated from the inner wall of the refrigerator, followed by the application of a voltage suitable for food to the same. A high voltage generator used for this purpose is provided with safety devices (1027, 1078) for preventing the flow of a current exceeding a specified value. In a fryer, an electrode (260) is inserted into an oil container and a voltage of 500-700 V is applied to the electrode (260) while leaving a fryer case ungrounded.
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 March 17, 1998 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2020.
- 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.