US2823215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rendering animal fat
Assignee: Sharples Corp
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Filing: 1956-10-04
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Granted: 1958-02-11
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Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Francis P Downing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:01
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/12; C11B1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS FOR THE RENDERING OF ANIMAL FAT WHICH COMPRISES REDUCING SAID FAT TO PARTICLE SIZES RANGING BETWEEN 1/4" AND 3/4" THEREAFTER HEATING THE MASS TO A TEMPERATURE SUFFICIENTLY HIGH TO MELT THE FAT BUT NOT IN EXCESS OF 160*F., SUBJECTING THE HEATED MASS TO CENTRIFUGING TO REMOVE BETWEEN 70 AND 80% OF THE SOLIDS, SUBJECTING THE SOLIDS IN THE REST OF THE MASS TO COMMINUTION TO REDUCE THE LARGEST DIMENSION OF SAID LAST-MENTIONED SOLIDS TO LESS THAN 0.035". THEREAFTER SUBJECTING SAID LAST-MENTIONED MASS TO TREATMENT WITH LIVE STEAM TO RAISE ITS TEMPERATURE TO BETWEEN 180*F. AND 210*F. AND TO PARTIALLY HYDROLYZE COLLAGEN CONTAINED THEREIN, AND SUBSEQUENTLY SUBJECTING SAID LAST-MENTIONED MASS TO CENTRIFUGING WITHIN SAID LASTMENTIONED TEMPERATURE RANGE UNDER CONDITIONS SUCH THAT THE CLARIFIED FAT IS DISCHARGED FROM THE ZONE OF CENTRIFUGATION ADJACENT THE AXIS THEREOF WHEREAS THE SOLIDS, WATER AND EMULSION CONTAINED THEREIN ARE DISCHARGED PERIPHERALLY FROM SAID LAST-MENTIONED ZONE OF CENTRIFUGATION.
Claim 2
Dependent Claim
153 words
A PROCESS FOR THE RENDERING OF ANIMAL FAT WHICH COMPRISES REDUCING SAID FAT TO PARTICLE SIZES RANGING BETWEEN 1/4" AND 3/4" THEREAFTER HEATING THE MASS TO A TEMPERATURE SUFFICIENTLY HIGH TO MELT THE FAT BUT NOT IN EXCESS OF 160*F., SUBJECTING THE HEATED MASS TO CENTRIFUGING TO REMOVE BETWEEN 70 AND 80% OF THE SOLIDS, SUBJECTING THE SOLIDS IN THE REST OF THE MASS TO COMMINUTION TO REDUCE THE LARGEST DIMENSION OF SAID LAST-MENTIONED SOLIDS TO LESS THAN 0.035". THEREAFTER SUBJECTING SAID LAST-MENTIONED MASS TO TREATMENT WITH LIVE STEAM TO RAISE ITS TEMPERATURE TO BETWEEN 180*F. AND 210*F. AND TO PARTIALLY HYDROLYZE COLLAGEN CONTAINED THEREIN, AND SUBSEQUENTLY SUBJECTING SAID LAST-MENTIONED MASS TO CENTRIFUGING WITHIN SAID LASTMENTIONED TEMPERATURE RANGE UNDER CONDITIONS SUCH THAT THE CLARIFIED FAT IS DISCHARGED FROM THE ZONE OF CENTRIFUGATION ADJACENT THE AXIS THEREOF WHEREAS THE SOLIDS, WATER AND EMULSION CONTAINED THEREIN ARE DISCHARGED PERIPHERALLY FROM SAID LAST-MENTIONED ZONE OF CENTRIFUGATION.
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) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |