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US2968523A
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Preparation of sodium-potassium borohydride
Assignee: Callery Chemical Co
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Filing: 1954-09-21
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Granted: 1961-01-17
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Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 George L Cunningham
- 👤 John M Bryant
- 👤 Emily M Gause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:32
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A METHOD OF PREPARING THE DOUBLE BOROHYDRIDE SALT OF SODIUM AND POTASSIUM (NABH4 KBH4) WHICH COMPRISES ADDING SODIUM BOROHYDRIDE TO AN ALCOHOLIC SOLUTION OF POTASSIUM HYDROXIDE IN A MOLAR RATIO OF HYDROXIDE TO BOROHYDRIDE OF MORE THAN 2:1 AND RECOVERING THE DOUBLE SALT NABH4KBHG4 WHICH PRECIPITATES.
Claim 2
Independent Claim
46 words
A METHOD OF PREPARING THE DOUBLE BOROHYDRIDE SALT OF SODIUM AND POTASSIUM (NABH4 KBH4) WHICH COMPRISES ADDING SODIUM BOROHYDRIDE TO AN ALCOHOLIC SOLUTION OF POTASSIUM HYDROXIDE IN A MOLAR RATIO OF HYDROXIDE TO BOROHYDRIDE OF MORE THAN 2:1 AND RECOVERING THE DOUBLE SALT NABH4KBHG4 WHICH PRECIPITATES.
Claim 3
Dependent Claim
9 words
A NEW COMPOSITION OF MATTER, THE DOUBLE SALT NABH4KBH4.
Claim 4
Dependent Claim
9 words
A NEW COMPOSITION OF MATTER, THE DOUBLE SALT NABH4KBH4.
References Cited (Backward Citations)
US2741540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |