US2557397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating gluten
Assignee: Corn Products Refining Co
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Filing: 1950-04-14
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Granted: 1951-06-19
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Expires: 1970-04-14
Abstract
No abstract record available.
Inventors
- 👤 Charles W Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:28
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE PROCESS OF OBTAINING PROTEIN FROM CORN GLUTEN WHICH COMPRISES TREATING AN AQUEOUS SLURRY OF GLUTEN AT A CONCENTRATION OF 3 TO 15 PER CENT, DRY SUBSTANCE, WITH 2 PER CENT TO 8 PER CENT OF ALKALI SULFIDE AND SUFFICIENT ALKALI HYDROXIDE TO ADJUST THE PH OF THE SYSTEM TO 12.0 TO 12.6 AT A TEMPERATURE OF 40* C. TO 50* C. FOR A PERIOD OF TIME NOT EXCEEDING ABOUT ONE HOUR, THEREAFTER, SEPARATING THE EXTRACT FROM RESIDUAL MATERIAL, ADJUSTING THE PH OF THE EXTRACT TO 4.5 TO 4.7 TO PRECIPITATE PROTEIN MATERIAL THEREFROM AND RECOVERING THE PROTEIN.
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) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |