Patent USRE27583E successfully refreshed from Google Patents.
USRE27583E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of gelatinous material from animal collagen
Assignee: —
•
Filing: 1971-10-14
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Granted: 1973-02-20
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Expires: 1991-10-14
Abstract
Abstract GELATIN AND EQUIVALENT GELATIONOUS PRODUCTS THAT ARE COLD WATER SOLUBLE AND HEAT RESISTANT ARE PREPARED FROM A SOURCE MATERIAL, SUCH AS ANIMAL COLLAGEN OR MARINE OR VEGETABLE COLLOIDS; BY SUBJECTING THE SOURCE MATERIAL, EITHER DIRECTLY OR FOLLOWING A PRETREATMENT, TO LOW TEMPERATURE FREEZING FOLLOWED BY LYOPHILIZATION. THE LYOPHILIZATION MAY BE PERFORMED BY RADIANT HEATING OF THE PRODUCT TO ABOUT 100*C.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:49
CPC Classifications
C; C09; C09H; C09H3/00; A; A23; A23J; A23J1/00; A23J1/10; C09H9/00
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |