Patent US2745856A successfully refreshed from Google Patents.
US2745856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering animal fats
Assignee: Hygrade Food Products Corp
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Filing: 1952-04-30
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Granted: 1956-05-15
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 William R Dayen
- 👤 Kenneth M Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:13
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF CONTINUOUSLY RENDERING FATS WHICH COMPRISES COARSELY GRINDING FAT CONTAINING TISSUE, CONTINUOUSLY FEEDING SAID GROUND TISSUE TO A POINT OF APPLICATION OF HEAT, HEATING THE GROUND TISSUE THUS FED TO A RELATIVELY LOW TEMPERATURE NOT HIGH ENOUGH TO COAGULATE SAID TISSUE BUT SUFFICIENT TO MELT THE SAID FAT, THEREBY TO RENDER THE TISSUE EFFECTIVELY FLUID, CONTINUOUSLY PUMPING SAID FLUIDIZED TISSUE TO A SECOND POINT OF APPLICATION OF HEAT, AND CONTINUOUSLY HEATING THE FLUIDIZED TISSUE THUS BEING FED UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO COAGULATE THE ANIMAL PROTEIN CONTAINED THEREIN, CONTINUOUSLY PUMPING SAID COAGULATED TISSUE TO A RENDERING POINT, AND THEREAFTER RENDERING THE TISSUE BY CONTINUOUSLY GRINDING THE SAME TO A SUB-CELLULAR NON-FIBROUS STATE.
Claim 2
Independent Claim
116 words
THE METHOD OF CONTINUOUSLY RENDERING FATS WHICH COMPRISES COARSELY GRINDING FAT CONTAINING TISSUE, CONTINUOUSLY FEEDING SAID GROUND TISSUE TO A POINT OF APPLICATION OF HEAT, HEATING THE GROUND TISSUE THUS FED TO A RELATIVELY LOW TEMPERATURE NOT HIGH ENOUGH TO COAGULATE SAID TISSUE BUT SUFFICIENT TO MELT THE SAID FAT, THEREBY TO RENDER THE TISSUE EFFECTIVELY FLUID, CONTINUOUSLY PUMPING SAID FLUIDIZED TISSUE TO A SECOND POINT OF APPLICATION OF HEAT, AND CONTINUOUSLY HEATING THE FLUIDIZED TISSUE THUS BEING FED UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO COAGULATE THE ANIMAL PROTEIN CONTAINED THEREIN, CONTINUOUSLY PUMPING SAID COAGULATED TISSUE TO A RENDERING POINT, AND THEREAFTER RENDERING THE TISSUE BY CONTINUOUSLY GRINDING THE SAME TO A SUB-CELLULAR NON-FIBROUS STATE.
References Cited (Backward Citations)
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Cited
US705034A
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US2388284A
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US2467529A
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US2468636A
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US2616910A
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US2697112A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |