US2774734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid for gravity separation
Assignee: KNAPSACK GRIESHEIM AG fur STIC
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Filing: 1952-09-23
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Granted: 1956-12-18
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Expires: 1972-09-23
Abstract
No abstract record available.
Inventors
- 👤 Rodis Franz
- 👤 Thomas Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/44; B03B5/442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A COMPOSITION OF MATTER USEFUL FOR GRAVITY SEPARATION OF GANGUE FROM COMMINUTED MINERAL MATTER, SAID COMPOSITION COMPRISING WATER AND RAPIDLY COOLED ATOMIZED PARTICLES OF FERRO-ALLY OF UP TO 200 MICRON IN DIAMETER.
Claim 2
Dependent Claim
32 words
A COMPOSITION OF MATTER USEFUL FOR GRAVITY SEPARATION OF GANGUE FROM COMMINUTED MINERAL MATTER, SAID COMPOSITION COMPRISING WATER AND RAPIDLY COOLED ATOMIZED PARTICLES OF FERRO-ALLY OF UP TO 200 MICRON IN DIAMETER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |