US3103412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1963-09-10
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Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:35
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF TREATING CALCIUM BORATE ORES TO RECOVER USEFUL BORON COMPOUNDS THEREFROM, WHICH COMPRISES MIXING SAID ORE WITH AQUEOUS AMMONIUM SULFATE; HEATING THE MIXTURE TO A TEMPERATURE OF 95*TO 105*C. TO PRODUCE A SLURRY OF AMMONIUM PENTABORATE SOLUTION, PRECIPITATED CALCIUM SULFATE AND GANGUE; FILTERING THE SLURRU TO REMOVE SAID CALCIUM SULFATE AND GANGUE; COOLING THE FILTRATE TO CAUSE AMMONIUM PENTABORATE TO CRYSTALLIZE THEREFROM; AND SEPARATING THE CRYSTALLIZED PENTABORATE FROM SAID FILTRATE.
Claim 2
Independent Claim
72 words
THE METHOD OF TREATING CALCIUM BORATE ORES TO RECOVER USEFUL BORON COMPOUNDS THEREFROM, WHICH COMPRISES MIXING SAID ORE WITH AQUEOUS AMMONIUM SULFATE; HEATING THE MIXTURE TO A TEMPERATURE OF 95*TO 105*C. TO PRODUCE A SLURRY OF AMMONIUM PENTABORATE SOLUTION, PRECIPITATED CALCIUM SULFATE AND GANGUE; FILTERING THE SLURRU TO REMOVE SAID CALCIUM SULFATE AND GANGUE; COOLING THE FILTRATE TO CAUSE AMMONIUM PENTABORATE TO CRYSTALLIZE THEREFROM; AND SEPARATING THE CRYSTALLIZED PENTABORATE FROM SAID FILTRATE.
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |