Automatic heating apparatus
CA 1301258 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Kasai, Isao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, Automatic heating apparatus e.g. a microwave oven, is, provided with a gas sensor for detecting gas or steam generated from an object being heated and a weight sensor for detecting the weight of the object. The signal level of the gas sensor indicates whether the change in the amount of gas or steam in the exhaust has reached a predetermined value, whereby to detect the kind and condition of the object to be heated. The change of the signal level of the gas sensor is also watched in comparison with the predetermined value in the detection time period based on the weight of the food detected by the weight sensor whereby to decide whether to continue or stop heating.
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
- Granted May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.