Patent US2810640A successfully refreshed from Google Patents.
US2810640A
Expired / Lapsed
US
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Master alloys containing rare earth metals
Assignee: American Metallurgical Products Co
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Filing: 1955-04-28
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Granted: 1957-10-22
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Bolkcom
- 👤 William E Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0006; C22; C22C; C22C28/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
AN ADDITION ALLOY FOR INCORPORATING RARE EARTH METALS INTO A METAL BATH CONSISTING ESSENTIALLY OF ABOUT 10% TO 30% RARE EARTH METALS, ABOUT 2% TO 10% OF ONE OR MORE METALS SELECTED FROM THE GROUP ZIRCONIUM. TITANIUM AND HAFNIUM AND THE BALANCE A METAL DILUENT OF HIGH DENSITY COMPATIBLE WITH THE METAL BATH
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |