Compositions – Magnetic – Iron-oxygen compound containing
Patent
1996-01-24
1997-09-09
Bonner, Melissa
Compositions
Magnetic
Iron-oxygen compound containing
252 6263, 252 6264, 252 626, 423594, C04B 3526
Patent
active
056658192
ABSTRACT:
A ferrite composition is created by adding a high Curie temperature ferrite, such as lithium ferrite, to a soft magnetic ferrite, such as magnesium manganese zinc ferrite. The composition is used in a microwave oven dish or laminate wrap to crisp or brown food by maintaining the food at a desired temperature during microwave operation. The high Curie temperature ferrite is preferably selected from the group consisting of lithium ferrite, nickel ferrite, copper ferrite, magnesium ferrite, strontium ferrite, barium ferrite, manganese ferrite, strontium zinc ferrite, barium zinc ferrite, and mixtures thereof. Additionally, the preferred process of making the new ferrite composition for use in microwave browning dishes includes the low-cost method of sintering raw materials in an air atmosphere. A browning plate including the ferrite compositions, and a microwave oven suitable for use with the browning plate are also disclosed.
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Bonner Melissa
Ceramic Powders, Inc.
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