US2684888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reaction of alkali metal hydride and boron trihalide
Assignee: EIDP Inc
•
Filing: 1952-06-24
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Granted: 1954-07-27
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Expires: 1972-06-24
Abstract
No abstract record available.
Inventors
- 👤 Everett H Pryde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:17
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
THE PROCESS OF PREPARING AN ALKALI METAL BOROHYDRIDE WHICH COMPRISES HEATING THE HYDRIDE OF SAID METAL WITH A BORON HALIDE AT A TEMPERATURE
Claim 2
Dependent Claim
23 words
THE PROCESS OF PREPARING AN ALKALI METAL BOROHYDRIDE WHICH COMPRISES HEATING THE HYDRIDE OF SAID METAL WITH A BORON HALIDE AT A TEMPERATURE
References Cited (Backward Citations)
US2532217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |