US2942935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of borohydrides
Assignee: Olin Corp
•
Filing: 1956-07-09
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Granted: 1960-06-28
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Expires: 1976-07-09
Abstract
No abstract record available.
Inventors
- 👤 Aden J King
- 👤 Virginia A Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:34
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
METHOD FOR THE PREPARATION OF ALKALI METAL AND AMMONIUM BOROHYDRIDES FROM MAGNESIUM DIBORIDE OF THE FORMULA MGB2 WHICH COMPRISES CONTACTING MAGNESIUM DIBORIDE OF THE FORMULA MGB2 WITH A HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM HYDROXIDES IN A MOLE RATIO OF HYDROXIDE TO MAGNESIUM DIBORIDE OF AT LEAST 1:1, THE HYDROXIDE BEING DISSOLVED IN A REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER, METHANOL AND ETHANOL, AND THE MOLARITY OF THE HYDROXIDE SOLUTION BEING AT LEAST 2.
Claim 2
Dependent Claim
82 words
METHOD FOR THE PREPARATION OF ALKALI METAL AND AMMONIUM BOROHYDRIDES FROM MAGNESIUM DIBORIDE OF THE FORMULA MGB2 WHICH COMPRISES CONTACTING MAGNESIUM DIBORIDE OF THE FORMULA MGB2 WITH A HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM HYDROXIDES IN A MOLE RATIO OF HYDROXIDE TO MAGNESIUM DIBORIDE OF AT LEAST 1:1, THE HYDROXIDE BEING DISSOLVED IN A REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER, METHANOL AND ETHANOL, AND THE MOLARITY OF THE HYDROXIDE SOLUTION BEING AT LEAST 2.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |