Microwave ovens
CA 1279378 C · Owner: Microwave Ovens Limited · Inventors: Eke, Kenneth I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: Microwave Oven, A microwave oven has a hot air system for forcing a flow of hot air through the oven cavity and a magnetron for delivering microwave power to the cavity. The oven distinguishes between foods in a first category (including baked food items) from foods in a second category (including frozen food items and items cooked in highsided metal containers). Discrimination between categories is achieved by sensing the hot air temperature after a predetermined time (such as 6 minutes) from the commencement of cooking, and terminating cooking when a threshold temperature appropriate to the sensed category is attained.
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 January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- 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.