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US2938923A
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Preparation of dimethylamine borane
Assignee: Callery Chemical Co
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Filing: 1953-11-17
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Granted: 1960-05-31
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Expires: 1973-11-17
Abstract
No abstract record available.
Inventors
- 👤 William H Schechter
- 👤 Roy M Adams
- 👤 George F Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:44
CPC Classifications
C; C07; C07F; C07F5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
THAT METHOD OF MAKING THE COMPOUND DIMETHYLAMINE-BORANE CORRESPONDING BY ANALYSIS TO THE FORMULA (CH3)2NH:BH3 COMPRISING SUBJECTING A SOLUTION OF A BOROHYDRIDE OF THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL BOROHYDRIDES AND DIMETHYL AMINE TO A DIRECT ELECTRIC CURRENT PASSED BETWEEN AN INERT ANODE AND A CATHODE, AND RECOVERING DIMETHYLAMINE-BORANE IN DIMETHYLAMINE SOLUTION.
Claim 2
Dependent Claim
55 words
THAT METHOD OF MAKING THE COMPOUND DIMETHYLAMINE-BORANE CORRESPONDING BY ANALYSIS TO THE FORMULA (CH3)2NH:BH3 COMPRISING SUBJECTING A SOLUTION OF A BOROHYDRIDE OF THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL BOROHYDRIDES AND DIMETHYL AMINE TO A DIRECT ELECTRIC CURRENT PASSED BETWEEN AN INERT ANODE AND A CATHODE, AND RECOVERING DIMETHYLAMINE-BORANE IN DIMETHYLAMINE SOLUTION.
Claim 3
Independent Claim
22 words
A METHOD OF MAKING STABLE DIMETHYLAMINE-BORANE COMPRISING DISSOLVING UNSTABLE DIMETHYLAMINE-BORANE IN A SOLVENT AN COOLING THE SOLUTION TO CRYSTALLIZE THEREFROM STABLE DIMETHYLAMINE-BORANE.
Claim 4
Independent Claim
22 words
A METHOD OF MAKING STABLE DIMETHYLAMINE-BORANE COMPRISING DISSOLVING UNSTABLE DIMETHYLAMINE-BORANE IN A SOLVENT AN COOLING THE SOLUTION TO CRYSTALLIZE THEREFROM STABLE DIMETHYLAMINE-BORANE.
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |