US2581148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of roasting coffee
Assignee: WM S SCULL Co
•
Filing: 1947-04-08
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Granted: 1952-01-01
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Expires: 1967-04-08
Abstract
No abstract record available.
Inventors
- 👤 William S Scull
- 👤 George A Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
IN THE ROASTING OF COFFEE WHEREIN THE COFFEE IS DEHYDRATED, DEVELOPED AND COLORED, THE PROCESS WHICH COMPRISES SUBJECTING THE COFFEE TO HEATING IN THREE STAGES OF TREATMENT IN SUCCESSIVE ZONES HAVING FACTORS OF TIME AND TEMPERATURE PROVIDING A TIME TEMPERATURE RELATIONSHIP IN EACH ZONE DIFFERING FROM THAT IN THE OTHER ZONES, THE TIME TEMPERATURE RELATIONSHIP IN THE FIRST ZONE PROVIDING FOR MAXIMUM ROASTING EFFECT THEREIN, THE TIME TEMPERATURE RELATIONSHIP IN THE THIRD ZONE PROVIDING MINIMUM ROASTING EFFECT THEREIN, THE TIME TEMPERATURE RELATIONSHIP IN THE INTERMEDIATE ZONE PROVIDING AN INTERMEDIATE ROASTING EFFECT THEREIN, THE TEMPERATURE IN THE FIRST ZONE BEING BETWEEN 600* F. AND 1200* F. AND AT LEAST ONE OF SAID FACTORS BEING PROGRESSIVELY DIMINISHED FROM ZONE TO ZONE.
References Cited (Backward Citations)
US1911763A
Cited
US754943A
Cited
US2002094A
Cited
US2033169A
Cited
US2326094A
Cited
US2388298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |