U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Apparatus for irradiating food products

Patent 4974503 Issued on December 4, 1990. Estimated Expiration Date: Icon_subject May 10, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Apparatus for continuous microwave sterilization of food in pouches
Patent #: 3961569
Issued on: 06/08/1976
Inventor: Kenyon ,   et al.

Device for rapid defreezing of frozen or deep-frozen products
Patent #: 4343979
Issued on: 08/10/1982
Inventor: Barbini ,   et al.

Denitration systems
Patent #: 4444723
Issued on: 04/24/1984
Inventor: Matsumaru ,   et al.

Cold air microwave drying apparatus
Patent #: 4468865
Issued on: 09/04/1984
Inventor: Inagaki

Conveyorized microwave heating chamber with dielectric wall structure
Patent #: 4570045
Issued on: 02/11/1986
Inventor: Jeppson

Conveyorized microwave heating system
Patent #: 4687895
Issued on: 08/18/1987
Inventor: Chitre ,   et al.

Microwave irradiating sterilization process Patent #: 4808782
Issued on: 02/28/1989
Inventor: Nakagawa ,   et al.

Inventor

Assignee

Application

No. 521381 filed on 05/10/1990

US Classes:

99/451, ELECTRIC, RADIANT OR VIBRATIONAL TREATING MEANS99/443C, Conveyor99/477, With means to move food99/483, NON-COOKING HEAT TREATMENT OF FOOD219/771, Food219/776, Multiple stations219/779Condition responsive

Examiners

Primary: Simone, Timothy F.

Attorney, Agent or Firm

Foreign Patent References

  • 0128397 EP. 12/22/1984
  • 3432341 DE. 09/22/1984
  • 3806816 DE. 03/22/1988
  • 3721762 DE 07/22/1988
  • 3834574 DE. 08/22/1989

International Classes

A23L 003/04
A23L 003/32
H05B 006/78

Foreign Application Priority Data

1990-01-18 DE

Abstract

An apparatus is provided for uniformly and rapidly heating, pasteurizing and/or sterilizing food products which comprises a conveyor on which the food products are conveyed and a source of radio-frequency radiation which is directed at the food products. The source is connected to shaped electrodes, the shaping of the electrodes and their spacing from the food product being selected in dependence upon the configuration and irradiation required of the product being treated. The food product may be a pre-cooked meal comprising a plurality of constituents and the electrode is then shaped to take into account the geometry of the different constituents and in combination with the spacing of the electrode from the product, takes the heating requirements of the individual components into account.

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