Method and apparatus for use in microwave heating
CA 2054671 C · Owner: Kraft Foods, Inc. · Inventors: De La Cruz, Marijo S.; Arent, Lee Mathew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method for enhancing microwave heating of food items. The device comprises an upstanding microwave reflective wall. During cooking the microwave, reflective device is maintained about the periphery of the food item, while the space inward and above the wall is maintained free of obstructions to microwave radiation. A susceptor film may be employed beneath the food item during heating. The device improves both rate and uniformity of 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
- Filed October 31, 1991 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 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.