Low-frequency electromagnetic induction heater
CA 2008232 C · Owner: Iguchi, Atsushi · Inventors: Iguchi, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a low-frequency electromagnetic induction heater which comprises a heating element and at least six induction coils each having a circular configuration. The coils are connected in a three-phase double delta connection are, arranged in a circular and symmetrical configuration are enclosed, in a resinous mold and form three sets of coils such that each set of coils receives electrical power in a different phase from a three-phase low-frequency electrical power source such as a, commercial three-phase alternating current power source. The coils are interconnected such that the current flows from one coil to another coil placed opposite to the said one coil in the circular …
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 22, 1990 and granted July 19, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2012.
- 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.