High-frequency heating apparatus
CA 2043436 C · Owner: Yoshino, Koji · Inventors: Kusunoki, Shigeru; Yoshino, Koji; Kashimoto, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a high-frequency heating apparatus comprising a high-frequency oscillator a heating, chamber, an antenna, a dielectric plate a detector and a, control circuit. The oscillator generates electromagnetic waves and supplies them to the heating chamber. The antenna which is located outside of the heating chamber is used to, receive the transmitted waves. The dielectric plate covers an opening in the chamber in front of the antenna. The detector receives the signal from the antenna and provides a signal to the control circuit that will eventually control the power of the oscillator to provide a stable heating process.
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 May 29, 1991 and granted November 5, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2013.
- 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.