US3083094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of beryllium
Assignee: —
•
Filing: —
•
Granted: 1963-03-26
•
Expires: 1980-03-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:35
CPC Classifications
C; C22; C22B; C22B35/00; C22B59/00; C22B9/00; C22B9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD FOR PURIFYING BERYLLIUM COMPRISING THE STEPS OF ADDING A RARE EARTH METAL TO IMPURE BERLLIUM, CONTAINING, AS IMPURITIES, IRON, ALUMINUM, SILICON AND OXYGEN HEATING AND MIXING THE RARE EARTH METAL AND THE BERYLLIUM TO FORM A MELT, HOLDING THE MELT TO PERMIT GRAVITY SEPARATION OF THE PURE BERYLLIUM FROM THE SLAG INCLUDING THE RARE EARTH METAL, AND SEPARATING THE PURE BERYLLIUM BY REMOVING IT FROM THE UPPER PORTION OF THE MELT.
Claim 2
Independent Claim
73 words
A METHOD FOR PURIFYING BERYLLIUM COMPRISING THE STEPS OF ADDING A RARE EARTH METAL TO IMPURE BERLLIUM, CONTAINING, AS IMPURITIES, IRON, ALUMINUM, SILICON AND OXYGEN HEATING AND MIXING THE RARE EARTH METAL AND THE BERYLLIUM TO FORM A MELT, HOLDING THE MELT TO PERMIT GRAVITY SEPARATION OF THE PURE BERYLLIUM FROM THE SLAG INCLUDING THE RARE EARTH METAL, AND SEPARATING THE PURE BERYLLIUM BY REMOVING IT FROM THE UPPER PORTION OF THE MELT.
References Cited (Backward Citations)
GB773822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |