US3669685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fried potato products
Assignee: United States Department of Agriculture
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Filing: 1970-07-24
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Granted: 1972-06-13
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Expires: 1990-07-24
Abstract
Abstract THE INVENTION ENABLES THE PRODUCTION OF FRIED PRODUCTS OF DESIRABLE PROPERTIES FROM RAW STOCK WHICH EXHIBITS EXCESSIVE BROWNING TENDCIES AND WHICH WOULD NORMALLY YIELD FRIED PRODUCTS OF EXCESSIVELY DARK COLOR, TYPICALLY, PIECESS OF RAW POTATO ARE IMMERSED FOR A SHORT TIME IN A LIQUID REFRIGERANT (SUCH AS LIQUID NITROGEN OR CICHLORODIFLUOROMETHANE), LEACHED WITH WARM WATER, AND FRIED IN EDIBLE OIL.
Inventors
- 👤 Merle L Weaver
- 👤 Earl Hautala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
A; A23; A23L; A23L19/00; A23L19/10; A23L19/12; A23L19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |