US2554750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of zein
Assignee: —
•
Filing: —
•
Granted: 1951-05-29
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:41
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/415; C07K14/425; A; A23; A23J; A23J1/00; A23J1/12; A23J1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
PROCESS FOR THE EXTRACTION OF ZEIN FROM MAIZE GLUTEN, CHARACTERIZED IN THAT WATER-CONTAINING MAIZE GLUTEN IS SUBJECTED TO A TREATMENT WITH A CHLORINATED HYDROCARBON IN LIQUID CONDITION AT ABOVE ROOM TEMPERATURE WHEREBY THE MAJOR PORTION OF THE IMPURITIES IS DISSOLVED OUT, AND THE PURIFIED MAIZE GLUTEN IS THEN TREATED WITH A ZEIN SOLVENT TO EXTRACT THE ZEIN.
Claim 2
Dependent Claim
57 words
PROCESS FOR THE EXTRACTION OF ZEIN FROM MAIZE GLUTEN, CHARACTERIZED IN THAT WATER-CONTAINING MAIZE GLUTEN IS SUBJECTED TO A TREATMENT WITH A CHLORINATED HYDROCARBON IN LIQUID CONDITION AT ABOVE ROOM TEMPERATURE WHEREBY THE MAJOR PORTION OF THE IMPURITIES IS DISSOLVED OUT, AND THE PURIFIED MAIZE GLUTEN IS THEN TREATED WITH A ZEIN SOLVENT TO EXTRACT THE ZEIN.
References Cited (Backward Citations)
US2229870A
Cited
US744510A
Cited
US1880816A
Cited
US2120946A
Cited
US2044769A
Cited
US2260111A
Cited
US2479519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |