US3552031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of water from solid organic materials
Assignee: University of Melbourne
•
Filing: 1968-12-30
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Granted: 1971-01-05
•
Expires: 1988-12-30
Abstract
Abstract WATER IS SEPARATED FROM SOLID ORGANIC MATERIAL, FOR EXAMPLE BROWN COAL AS MINED BY TREATMENT IN THE PRESENCE OF A FLUID MEDUIM AT AN ELEVATED TEMPERATURE AND A PRESSURE EXCEEDING THE SATURATION PRESSURE BUT BELOW 5000 P.S.I.
Inventors
- 👤 David Gordon Evans
- 👤 Stanley Robert Siemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:57
CPC Classifications
C; C10; C10F; C10F5/00
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |