US3687685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tortilla and process using phosphorus oxychloride
Assignee: Individual
•
Filing: 1970-07-24
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Granted: 1972-08-29
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Expires: 1990-07-24
Abstract
Abstract TO RETARD THE STALING OF TORTILLAS, WHICH ARE AN UNLEAVENED FOOD PRODUCT MADE FROM NIXTAMALIZED CORN OR CORN FLOUR BY INCORPORATING AN ADDITIVE IN MAKING THE TORTILLA DOUGH. THE ADDITIVE IS PHOSPHORUS OXYCHLORIDE IN ALKALINE CONDITION.
Inventors
- 👤 Manuel Jesus Rubio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:58
CPC Classifications
A; A21; A21D; A21D2/00; A21D2/02; A21D13/00; A21D13/40; A21D13/42
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |