US3798208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of protein with ethylenimine
Assignee: JBS USA LLC
•
Filing: 1972-05-08
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Granted: 1974-03-19
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Expires: 1992-05-08
Abstract
Abstract AN IMPROVED METHOD FOR PREPARING PROTEIN DERIVATIVES COMPRISING REACTING PROTEIN WITH ETHYLENIMINE IN A NONAQUEOUS MEDIUM IN THE PRESENCE OF A LEWIS ACID CATALYST. THE REACTION PRODUCT IS A MODIFIED PROTEIN CHARACTERIZED BY AN INCREASED ISOELECTRIC PH.
Inventors
- 👤 D Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:41
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/006; A; A23; A23J; A23J3/00; A23J3/04; A23J3/08; A23J3/10; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047; G03C2001/0471; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/841
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |