US3116111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of beryllium hydroxide
Assignee: Beryllium Corp
•
Filing: 1962-03-26
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Granted: 1963-12-31
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Simon J Morana
- 👤 Gordon F Simons
- 👤 Carl J Wummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
C; C01; C01F; C01F3/00; C22; C22B; C22B35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF PURIFYING COMMERICAL GRADE BERYLLIUM HYDROXIDE WHICH COMPRISES REACTING BERYLLIUM HYDROXIDE WITH AN EXCESS OF CONCENTRATED SULFURIC ACID, BAKING THE REACTION MASS AT ABOUT 260*C., DILUTING THE BAKED RECTION MASS WITH DEIONIZED WATER, FILTERING THE DILUTED BAKED REACTION MASS TO REMOVE SILICA AND ALKALINE EARTH FLUORIDES THEREFROM, ADJUSTING THE PH OF THE FILTRATE TO ABOUT 5.3 WITH AQUEOUS AMMONIA, BOILING AND AGITATING THE FILTRATE AND THEN FILTERING THE SAME TO REMOVE SUBSTANTIALLY ALL IMPURITIES PRESENT TO OBTAIN A SECOND FILTATE CONTAINING SUBSTANTIALLY PURE BERYLLIUM SULFATE IN SOLUTION, THEN ADDING AMMONIUM HYDROXIDE TO THE SOLUTION TO PRECIPITATE BERYLLIUM HYDROXIDE AND FILTERING TO OBTAIN SUBSTANTIALLY PURE BERYLLIUM HYDROXIDE FILTER CAKE.
Claim 2
Independent Claim
110 words
THE METHOD OF PURIFYING COMMERICAL GRADE BERYLLIUM HYDROXIDE WHICH COMPRISES REACTING BERYLLIUM HYDROXIDE WITH AN EXCESS OF CONCENTRATED SULFURIC ACID, BAKING THE REACTION MASS AT ABOUT 260*C., DILUTING THE BAKED RECTION MASS WITH DEIONIZED WATER, FILTERING THE DILUTED BAKED REACTION MASS TO REMOVE SILICA AND ALKALINE EARTH FLUORIDES THEREFROM, ADJUSTING THE PH OF THE FILTRATE TO ABOUT 5.3 WITH AQUEOUS AMMONIA, BOILING AND AGITATING THE FILTRATE AND THEN FILTERING THE SAME TO REMOVE SUBSTANTIALLY ALL IMPURITIES PRESENT TO OBTAIN A SECOND FILTATE CONTAINING SUBSTANTIALLY PURE BERYLLIUM SULFATE IN SOLUTION, THEN ADDING AMMONIUM HYDROXIDE TO THE SOLUTION TO PRECIPITATE BERYLLIUM HYDROXIDE AND FILTERING TO OBTAIN SUBSTANTIALLY PURE BERYLLIUM HYDROXIDE FILTER CAKE.
References Cited (Backward Citations)
US2899276A
Cited
US2974011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |