US2615788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of borohydrides of the alkali metals
Assignee: Metal Hydrides Inc
•
Filing: 1949-11-14
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Granted: 1952-10-28
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas R P Gibb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:34
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A METHOD FOR PURIFYING AN ALKALI METAL BOROHYDRIDE PRODUCED BY THE REACTION OF AN ALKYL BORATE WITH AN ALKALI METAL HYDRIDE, THE STEPS WHICH COMPRISES BRINGING DIBORANE IN CONTACT WITH THE BOROHYDRIDE PRODUCED BY SAID REACTION TO REACT WITH THE IMPURITIES THEREIN AND OBTAIN A SUBSTANTIALLY PURE ALKALI METAL BOROHYDRIDE CONTAINING A LOW BOILING REACTION PRODUCT, AND REMOVING THE LOW BOILING REACTION PRODUCT.
Claim 2
Dependent Claim
64 words
IN A METHOD FOR PURIFYING AN ALKALI METAL BOROHYDRIDE PRODUCED BY THE REACTION OF AN ALKYL BORATE WITH AN ALKALI METAL HYDRIDE, THE STEPS WHICH COMPRISES BRINGING DIBORANE IN CONTACT WITH THE BOROHYDRIDE PRODUCED BY SAID REACTION TO REACT WITH THE IMPURITIES THEREIN AND OBTAIN A SUBSTANTIALLY PURE ALKALI METAL BOROHYDRIDE CONTAINING A LOW BOILING REACTION PRODUCT, AND REMOVING THE LOW BOILING REACTION PRODUCT.
References Cited (Backward Citations)
US2461662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |