Apparatus for continuous microwave sterilization of food in pouches
Patent 3961569 Issued on June 8, 1976. Estimated Expiration Date: 
June 8, 1993. 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.
June 8, 1993. 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 3261140 3427171 3525840 3528361 3535483 3539751 3581652 3718082 InventorsAssigneeApplicationNo. 497789 filed on 08/15/1974US Classes:99/451, ELECTRIC, RADIANT OR VIBRATIONAL TREATING MEANS219/700, Conveyor219/725, Cookware (e.g., vessel, utensil, etc.)426/234, TREATMENT OF PACKAGED PRODUCT BY ELECTRICAL OR WAVE ENERGY426/412, Heat treatment of encased food99/443C, Conveyor99/470, With sequential heating and cooling99/483NON-COOKING HEAT TREATMENT OF FOODExaminersPrimary: Wilhite, Billy J.Assistant: Niegowski, James A. Attorney, Agent or FirmAbstractAn apparatus for sterilizing food packaged in flexible pouches in a contius process employing microwaves for heating the food within the sealed flexible pouches to sterilizing temperatures. The pouches of food are conveyed thru the apparatus between a pair of conveyor belts which are permeable to microwaves and which comprise a layer of thermal insulation which is also permeable to microwaves. The pouches are also permeable to microwaves. The apparatus is pressurized to prevent bursting of the flexible pouches at the high sterilizing temperatures attained. | |
