US2920935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making aluminum containing hydrides
Assignee: HERMAN I SCHLESINGER
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Filing: 1954-01-15
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Granted: 1960-01-12
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Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 Albert E Finholt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE TWO STEP METHOD OF PREPARING A METAL ALUMINUM HYDRIDE, WHICH COMPRISES, AS THE FIRST STEP, REACTING A METAL ALUMINUM HYDRIDE HAVING THE FORMULA M (ALH4) VM WITH AN ALUMINUM HALIDE IN THE SUBSTANTIAL ABSENCE OF NON-ALUMINUM METAL HYDRIDE TO FORM ALUMINUM HYDRIDE AND A NON-ALUMINUM METAL HALIDE, AND AS A SECOND STEP, AFTER SUBSTANTIALLY ALL THE ALUMINUM HALIDE IS USED UP AND IN THE SUBSTANTIAL ABSENCE OF ALUMINUM HALIDE, RE ACTING THE RESULTING ALUMINUM HYDRIDE WITH A NON-ALUMINUM METAL HYDRIDE HAVING THE FORMULA NHVM TO FORM A METAL ALUMINUM HYDRIDE HAVING THE FORMULA N (ALH4) VM WHEREIN M AND N ARE BOTH METALS OTHER THAN ALUMINUM AND VM AND VN ARE NUMBERS DESIGNATING THE VALENCE OF METALS M AND N, RESPECTIVELY.
Claim 2
Dependent Claim
122 words
THE TWO STEP METHOD OF PREPARING A METAL ALUMINUM HYDRIDE, WHICH COMPRISES, AS THE FIRST STEP, REACTING A METAL ALUMINUM HYDRIDE HAVING THE FORMULA M (ALH4) VM WITH AN ALUMINUM HALIDE IN THE SUBSTANTIAL ABSENCE OF NON-ALUMINUM METAL HYDRIDE TO FORM ALUMINUM HYDRIDE AND A NON-ALUMINUM METAL HALIDE, AND AS A SECOND STEP, AFTER SUBSTANTIALLY ALL THE ALUMINUM HALIDE IS USED UP AND IN THE SUBSTANTIAL ABSENCE OF ALUMINUM HALIDE, RE ACTING THE RESULTING ALUMINUM HYDRIDE WITH A NON-ALUMINUM METAL HYDRIDE HAVING THE FORMULA NHVM TO FORM A METAL ALUMINUM HYDRIDE HAVING THE FORMULA N (ALH4) VM WHEREIN M AND N ARE BOTH METALS OTHER THAN ALUMINUM AND VM AND VN ARE NUMBERS DESIGNATING THE VALENCE OF METALS M AND N, RESPECTIVELY.
References Cited (Backward Citations)
US2576311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |