Heating apparatus utilizing microwaves
CA 2114092 C · Owner: Naraseiki Kabushiki Kaisha · Inventors: Nara, Akikazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heating apparatus utilizing microwaves characterized in that it is possible to heat with a super high temperature over about 1000~C and also to control the temperature within the wide range from such a super high temperature to a comparative low temperature. The heating apparatus is composed of a heating element mainly made of a carbon powder and sintered in honeycomb structure, a microwave generator irradiating microwaves to the heating element and an air blower blowing air to the heating element thereby obtaining hot air with high temperature.
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 24, 1994 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.