Automatic heating apparatus
CA 2016154 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Kasai, Isao; Yoshino, Koji; Kashimoto, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heating and cooking apparatus has a, detection sensor for sensing the state of heating so as to automatically control the heating operation. An orifice member is disposed so as to be opened to the inside of an auxiliary passage which has an inlet located at a position in the vicinity of the circumference of an impeller of a cooling fan for cooling a magnetron which is provided on the back side of a heating chamber and through which steam from the heating chamber is discharged to the outside and air, supplied by the fan is blown off into the auxiliary passage so as to generate the venturi action thus, promoting the flow of steam in the auxiliary passage. The detection sensor is disposed in …
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 7, 1990 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.