US2737447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diborane preparation
Assignee: General Electric Co
•
Filing: 1950-06-14
•
Granted: 1956-03-06
•
Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 John R Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:50
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06; C01B6/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE METHOD OF PREPARING DIBORANE WHICH COMPRISES EFFECTING REACTION BETWEEN LITHUM HYDRIDE AND A BORON HALIDE IN THE PRESENCE OF TETRAHYDROFURAN WHILE MAINTAINING THE REACTION MASS AT SUBSTANTIALLY REFLUX TEMPERATURES DURING AT LEAST THE FIRST PART OF THE REACTION PERIOD.
Claim 2
Independent Claim
40 words
THE METHOD OF PREPARING DIBORANE WHICH COMPRISES EFFECTING REACTION BETWEEN LITHUM HYDRIDE AND A BORON HALIDE IN THE PRESENCE OF TETRAHYDROFURAN WHILE MAINTAINING THE REACTION MASS AT SUBSTANTIALLY REFLUX TEMPERATURES DURING AT LEAST THE FIRST PART OF THE REACTION PERIOD.
References Cited (Backward Citations)
US2461661A
Cited
US2468260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |