Oscillating air dispensers for microwave oven
CA 2107937 C · Owner: Patentsmith Ii, Inc. · Inventors: Sparman, Alden B. Sr.; Smith, Donald P.; Dobie, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for transferring heat between temperature controlled air dispensed from a pair of oscillating ducts and a food product in a cabinet having an interior compartment bounded by front side, and rear walls. A foraminous partition having a, central portion and extremities is mounted to divide, the interior of the cabinet into a cooking chamber and an air conditioning chamber. It is configured to encircle a portion of the cooking chamber such that the air conditioning chamber extends around a major part of the periphery of the cooking chamber wherein air is drawn along multiple paths toward side walls and toward the rear wall from the cooking chamber.
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 7, 1993 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2015.
- 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.