US2968531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of diborane
Assignee: Callery Chemical Co
•
Filing: 1954-03-11
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Granted: 1961-01-17
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Roy M Adams
- 👤 Richard K Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06; C01B6/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF PREPARING DIBORANE WHICH COMPRISES MIXING AN ALKALI METAL HYDRODE, MH, WHERE M IS AN ALKALI METAL, AND BORON HALIDE, BX3, WHERE X IS A HALOGEN, IN THE PRESENCE OF AN ETHER HAVING THE FORMULA R(C2H4O)NOR'', WHERE N IS AN INTEGER FROM ONE TO FOUR AND R AND R'' ARE ALKYL HYDROCARBON RADICALS SELECTED FROM THE GROUP CONSISTING OF CH3 AND C2H5, AND COLLECTING THE DIBORANE THUS FORMED.
Claim 2
Independent Claim
70 words
A METHOD OF PREPARING DIBORANE WHICH COMPRISES MIXING AN ALKALI METAL HYDRODE, MH, WHERE M IS AN ALKALI METAL, AND BORON HALIDE, BX3, WHERE X IS A HALOGEN, IN THE PRESENCE OF AN ETHER HAVING THE FORMULA R(C2H4O)NOR'', WHERE N IS AN INTEGER FROM ONE TO FOUR AND R AND R'' ARE ALKYL HYDROCARBON RADICALS SELECTED FROM THE GROUP CONSISTING OF CH3 AND C2H5, AND COLLECTING THE DIBORANE THUS FORMED.
References Cited (Backward Citations)
US2544472A
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 |