Continuous coffee roasting process
Abstract
Abstract A CONTINUOUS PROCESS FOR ROASTING COFFE INVOLVING (1) THE CONTINUOUS AND PROGRESSIVE PREHEATING OF GREEN COFFEE BEANS IN THE PRESENCE OF STEAM AT 60 TO 200 P.S.I. FOR 5 TO 15 MINUTES TO EFFECT HYDROLYSIS AND PARTIAL ROASTING OF THE BEANS, PREHEATING DEVELOPING A CHARACTERISTIC FLAVOR AND AROMA PROFILE (AS DETERMINED BY GAS CHROMATOGRAPHY) WHICH, HOWEVER, IS NOT FULLY DEVELOPED (AS DETERMINED ORGANOLEPTICALLY FOLLOWING AQUEOUS EXTRACTION) (2) THE CONTINUOUS AND PROGRESSIVE DISCHARGE OF THE PREHEATED BEANS TO THE ATMOSPHERE AND (3) THE IMMEDIATE CONTINUOUS AND PROGRESSIVE ROASTING OF THE PREHEATED BEANS IN HIGH VELOCITY ROASTING GASES AT 450* TO 575*F. FOR 1/2 TO 15 MINUTES WHICH EFFECT FLUIDIZATION OF THE BEANS TOGETHER WITH FURTHER HYDROLYSIS AND CONTROLLED HEATING AND DRYING OF THE SAME, SUCH FLUIDIZED ROASTING COMPLETING THE ROASTING PROCESS BY FULLY DEVELOPING THE CHARACTERISTIC FLAVOR AND AROMA PROFILE DEVELOPED DURING THE PREHEATING (AS DETERMINED BOTH BY GAS CHROMATOGRAPHY AND ORGANOLEPTICALLY). FOLLOWING THE DESCRIBED PREHEATING AND ROASTING, THE ROASTED BEANS CAN BE (4) CONTINUOUSLY AND PROGRESSIVELY COOLED IN HIGH VELOCITY COOLING GASES WHICH EFFECT FLUIDIZATION OF THE ROASTED BEANS.
Inventors
- 👤 Lee Nutting
- 👤 George S Chong
- 👤 Jarrott T Miller
- 👤 John G Mcchesney
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |