Patent US2994587A successfully refreshed from Google Patents.
US2994587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrides of magnesium and beryllium
Assignee: Metal Hydrides Inc
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Filing: 1958-06-13
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Granted: 1961-08-01
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Donald W Vose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
THE METHOD OF PREPARING A FINELY DIVIDED POWDER OF A HYDRIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND BERYLLIUM WHICH COMPRISES SUBJECTING THE SELECTED METAL IN THE FORM OF PIECES HAVING AN AVERAGE PARTICLE SIZE SUBSTANTIALLY GREATER THAN THE AVERAGE PARTICLE SIZE OF SAID FINELY DIVIDED POWDER TO THE ACTION OF HYDROGEN UNDER HIGH PRESSURE WHILE HEATED AT A HIGH TEMPERATURE UNTIL THE METAL HAS ABSORBED BETWEEN ABOUT 10 TO 80 PERCENT OF THE HYDROGEN EQUIVALENT TO THE METAL HYDRIDE THEREBY TO EMBRITTLE AND PERMIT IT TO BE PULVERIZED, PULVERIZING THE EMBRITTLED METAL, AND SUBJECTING THE PULVERIZED MATERIAL TO THE ACTION OF HYDROGEN UNDER HIGH PRESSURE WHILE HEATED AT A HIGH TEMPERATURE UNTIL SUBSTANTIALLY ALL OF THE SELECTED METAL HAS BEEN CONVERTED TO METAL HYDRIDE, THE PRESSURE OF SAID HYDROGEN UNDER HIGH PRESSURE BEING NOT LESS THAN ABOUT 200 POUNDS PER SQUARE INCH, THE TEMPERATURE USED BEING NOT LESS THAN ABOUT 230* C. BUT LESS THAN THE DISSOCIATION TEMPERATURE OF THE HYDRIDE OF THE SELECTED METAL.
Claim 2
Independent Claim
170 words
THE METHOD OF PREPARING A FINELY DIVIDED POWDER OF A HYDRIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND BERYLLIUM WHICH COMPRISES SUBJECTING THE SELECTED METAL IN THE FORM OF PIECES HAVING AN AVERAGE PARTICLE SIZE SUBSTANTIALLY GREATER THAN THE AVERAGE PARTICLE SIZE OF SAID FINELY DIVIDED POWDER TO THE ACTION OF HYDROGEN UNDER HIGH PRESSURE WHILE HEATED AT A HIGH TEMPERATURE UNTIL THE METAL HAS ABSORBED BETWEEN ABOUT 10 TO 80 PERCENT OF THE HYDROGEN EQUIVALENT TO THE METAL HYDRIDE THEREBY TO EMBRITTLE AND PERMIT IT TO BE PULVERIZED, PULVERIZING THE EMBRITTLED METAL, AND SUBJECTING THE PULVERIZED MATERIAL TO THE ACTION OF HYDROGEN UNDER HIGH PRESSURE WHILE HEATED AT A HIGH TEMPERATURE UNTIL SUBSTANTIALLY ALL OF THE SELECTED METAL HAS BEEN CONVERTED TO METAL HYDRIDE, THE PRESSURE OF SAID HYDROGEN UNDER HIGH PRESSURE BEING NOT LESS THAN ABOUT 200 POUNDS PER SQUARE INCH, THE TEMPERATURE USED BEING NOT LESS THAN ABOUT 230* C. BUT LESS THAN THE DISSOCIATION TEMPERATURE OF THE HYDRIDE OF THE SELECTED METAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |