US3556740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of complex metal hydrides
Assignee: Millennium Petrochemicals Inc
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Filing: 1958-02-04
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Granted: 1971-01-19
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Expires: 1978-02-04
Abstract
Abstract 1. A METHOD FOR PREPARATION OF COMPLEX METAL HYDRIDES OF THE FORMULA RXH4 WHEREIN R IS AN ALKALI METAL AND X IS A METAL FROM THE GROUP CONSISTING OF ALUMINUM, GALLIUM, INDIUM, AND THALLIUM WHICH COMPRISES HYDROGENATING A METAL FROM THE AFORESAID GROUP IN THE PRESENCE OF AN ALKALI METAL HYDRIDE AND AN ETHER SOLVENT FOR THE COMPLEX METAL HYDRIDE PRODUCT AT HYDROGEN PRESSURE OF FROM ABOUT 500 TO ABOUT 4,000 POUNDS PER SQUARE INCH AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 100*C. FOR FROM ABOUT ONE TO ABOUT TWENTY HOURS.
Inventors
- 👤 Jawad H Murib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:24
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/24; C01B6/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A METHOD FOR PREPARATION OF COMPLEX METAL HYDRIDES OF THE FORMULA
Claim 2
Independent Claim
11 words
A METHOD FOR PREPARATION OF COMPLEX METAL HYDRIDES OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |