Patent US3704169A successfully refreshed from Google Patents.
US3704169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying of sugar solutions
Assignee: WR Grace and Co
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Filing: 1971-05-03
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Granted: 1972-11-28
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Expires: 1991-05-03
Abstract
Abstract IN A PROCESS FOR CONTINUOUSLY PREPARING DRIED, SOLID, SUCROSE-CONTAINING PRODUCTS FROM A SUCROSE-CONTAINING SOLUTION BY DRYING DROPLETS OF THE SAID SOLUTION IN A CURRENT OF HEATED AIR AND IN THE PRESENCE OF SEPARATELY INTRODUCED RECYCLED DRIED PRODUCT SOLIDS, THE IMPROVEMENT COMPRISING CONTINUOUSLY CONTROLLING THE AVERAGE PARTICLE SIZE OF TH RECYCLED PRODUCT BELOW ABOUT 200 MICRONS.
Inventors
- 👤 Edward T Woodruff
- 👤 Viggo S Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:26
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02; C13B30/028
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |