Patent US3589912A successfully refreshed from Google Patents.
US3589912A
Expired / Lapsed
US
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Method of roasting coffee
Assignee: General Foods Corp
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Filing: 1968-04-17
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Granted: 1971-06-29
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Expires: 1988-04-17
Abstract
Abstract COFFEE IS PREDRIED TO A MOISTURE CONTENT BELOW ABOUT 7% BY WEIGHT UNDER CONDITIONS WHEREBY ROASTING DOES NOT OCCUR. THE PREDRIED COFFEE IS THEN ROASTED AT A TEMPERATURE BELOW THE CRITICAL BURNING TEMPERATURE UNTIL A SUBSTANTIAL PART OF THE ROASTING IS COMPLETED. THE COFFEE IS NEXT FURTHER HEATED TO BRING ITS TEMPERATURE TO THE CRITICAL BURNING TEMPERATURE FOR A BRIEF PERIOD, THEN RAPIDLY QUENCHED.
Inventors
- 👤 Irwin L Adler
- 👤 Alonzo H Feldbrugge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:46
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/04; A23F5/046
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |