US2580049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of gelatin
Assignee: Armour and Co
•
Filing: 1947-09-18
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Granted: 1951-12-25
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Expires: 1967-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert H Sifferd
- 👤 Lindson P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:06
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/10; C; C09; C09H; C09H3/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
IN A PROCESS FOR RECOVERING EDIBLE GELATIN FROM COLLAGEN BEARING MATERIAL, THE STEPS OF COMMINUTING THE MATERIAL, FLASH HEATING SAID MATERIAL AT A TEMPERATURE OF ABOUT 212* TO 320* F. UNDER PRESSURE WHILE PASSING THE MATERIAL IN THE FORM OF AN AQUEOUS SLURRY CONTINUOUSLY THROUGH AN ELONGATED ZONE OF RESTRICTED CROSS-SECTION AND WHILE MAINTAINING SAID MATERIAL IN TURBULENT AGITATION BY MEANS OF A PLURALITY OF STEAM JETS WITHIN SAID RESTRICTED ZONE, WHEREBY SAID MATERIAL IS UNIFORMLY HEATED AND THE COLLAGEN IN SAID COLLAGEN BEARING MATERIAL IS HYDROLYZED TO GELATIN WITHOUT ANY SUBSTANTIAL PORTION OF THE COLLAGEN BEING HYDROLYZED BEYOND THE GELATIN STAGE, REDUCING SAID PRESSURE TO ABOUT ATMOSPHERIC, CONTINUOUSLY SEPARATING THE RESULTING MATERIAL INTO SUBSTANTIALLY SOLID AND LIQUID FRACTIONS, AND SEPARATING THE GELATIN FROM THE LIQUID FRACTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |