US3817834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of salted-out proteins
Assignee: Individual
•
Filing: 1972-10-24
•
Granted: 1974-06-18
•
Expires: 1992-10-24
Abstract
Abstract PROTEINS E.G. ENZYMES, ARE OFTEN EXTRACTED FROM NATURAL SOURCES AS COLLOIDAL SOLS IN AQUEOUS MEDI THE ADDITION OF INORGANIC SALTS SUCH AS AMMONIUM SULFATE THESE SOLS CAN BE BROKEN AND THE PROTEIN RECOVERED. HOWEVER, THIS SALT PRECIPITATION TECHNIQUE OFTEN YIELDS A FINE SUSPENSION OF PROTEIN WHICH IS DIFFICULT TO RECOVER. ACCORDING TO THE PRESENT INVENTION, SALT-PRECIPITATED PROTEINS ARE ECONOMICALLY AND CONVENIENTLY RECOVERED BY THE ADDITION OF AN ORGANIC AGGLUTINATING AGENT SUCH AS KEROSENE OR ACTONE, WHICH BRINGS ABOUT A RAPID AGGLOMERATION OF THE SUSPENDED PROTEIN MATERIAL.
Inventors
- 👤 C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/415; C07K1/00; C07K1/14; C07K1/30; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/63; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/816
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |