Coffee extract products and methods and apparatus for their manufacture
Abstract
Abstract THE COFFEE EXTRACT CONCENTRATE TO BE FREEZE DRIED IS SPRAYED TO FORM DROPS. A METHOD AND APPARATUS ARE DISCLOSED IN WHICH A CRYOGEN GAS IS SPRAYED INTO A REGION TO CREATE A LOW TEMPERATURE ZONE FOR FREEZING THE DROPS. THE LATTER ARE CAUSED TO IMPINGE AND PASS THROUGH THE ZONE SO THAT THEY ARE INSTANTLY SHOCK FROZEN INTO DISCRETE SOLID FROZEN PARTICLES. THE PARTICLES ARE COLLECTED AND FREEZE DRIED IN SUITABLE APPARATUS TO SUBLIMATE THEIR ICE CONTENT AND FROM A DRIED PARTICLE PRODUCT. THE DRIED COFFEE PARTICLE PRODUCT IS CHARACTERIZED BY A LOW BULK DENSITY OF ABOUT 0.20 TO 0.25 GRAM PER CUBIC CENTIMETER AND BY HAVING A GRANULAR FORM, OF SPONGE-LIKE APPEARANCE, AND BEING HIGHLY POROUS AND EASILY AROMATIZED. A PROCESS IS DISCLOSED FOR USING COMBINED FREEZE CONCENTRATED AND EVAPORATION CONCENTRATED COFFEE EXTRACTS.
Inventors
- 👤 James W Casten
- 👤 Stanley H Shimabuku
Bibliographic Details
Claims Analysis
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |