US3873747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sterilizing a food product in a container
Assignee: Thomassen and Drijver Verblifa NV
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Filing: 1973-07-05
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Granted: 1975-03-25
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Expires: 1993-07-05
Abstract
Abstract A method of sterilizing food products in a closed vessel, such as a tin or jar, comprises adding only a relatively small quantity of a liquid, such as ethanol, before closing the vessel. The liquid completely evaporates at the sterilization temperature and pressure; it is miscible with at least a part of the product; is not injurious to health, does not influence the taste of the sterilized product unfavorably, and may provide an additional preserving action. Thus, the usual additional liquid may be omitted and a high temperature and/or prolonged duration of the heat treatment may be avoided.
Inventors
- 👤 E J Thomassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:14
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/14; A23B4/18; A23B4/20; A23B2/00; A23B2/30; A23B2/70; A23B2/725; A23B2/729; A23B4/005; A23B4/0053; A23B4/0056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
METHOD FOR STERILIZING A FOOD IN A CONTAINER SAID FOOD PRODUCT BEING SLECTED FROM THE CLASS CONSISTING OF MEAT, FISH AND POULTRY, AND HAVING A SUBSTANTIALLY FIXED SHAPE WHICH DIFFERS FROM THAT OF THE CONTAINER WHICH CONSISTS OF INSERTING THE FOODS PRODUCT TO BE STERILIZED INTO THE CONTAINER SO THAT SAID PRODUCT ONLY PARTIALLY FILLS SAID CONTAINER, INTRODUCING, BEFORE CLOSING SAID CONTAINER, OF SUBSTANTIALLY PURE ETHANOL, CLOSING VOLUME OF SAID CONTAINER, FROM ABOUT 0.05% TO ABOUT 5%, BY SAID CONTAINER, AND HEATING SAID CONTAINER AT SUCH A TEMPERATURE AND FOR SUCH A TIME THAT A SUFFICIENT STERILIZATION OF THE FOOD PRODUCT BY THE COMBINED EFFECT OF HEAT AND ETHANOL IS OBTAINED, THE LATTER BEING COMPLETELY EVAPORATED AT THE STERILIZATION TEMPERATURE.
Claim 2
Dependent Claim
120 words
METHOD FOR STERILIZING A FOOD IN A CONTAINER SAID FOOD PRODUCT BEING SLECTED FROM THE CLASS CONSISTING OF MEAT, FISH AND POULTRY, AND HAVING A SUBSTANTIALLY FIXED SHAPE WHICH DIFFERS FROM THAT OF THE CONTAINER WHICH CONSISTS OF INSERTING THE FOODS PRODUCT TO BE STERILIZED INTO THE CONTAINER SO THAT SAID PRODUCT ONLY PARTIALLY FILLS SAID CONTAINER, INTRODUCING, BEFORE CLOSING SAID CONTAINER, OF SUBSTANTIALLY PURE ETHANOL, CLOSING VOLUME OF SAID CONTAINER, FROM ABOUT 0.05% TO ABOUT 5%, BY SAID CONTAINER, AND HEATING SAID CONTAINER AT SUCH A TEMPERATURE AND FOR SUCH A TIME THAT A SUFFICIENT STERILIZATION OF THE FOOD PRODUCT BY THE COMBINED EFFECT OF HEAT AND ETHANOL IS OBTAINED, THE LATTER BEING COMPLETELY EVAPORATED AT THE STERILIZATION TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |