Patent US2406582A successfully refreshed from Google Patents.
US2406582A
Expired / Lapsed
US
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Removal of sulphur from molten metallic masses
Assignee: Huntington Alloys Corp
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Filing: 1943-04-14
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Granted: 1946-08-27
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Expires: 1963-04-14
Abstract
No abstract record available.
Inventors
- 👤 Bieber Clarence George
- 👤 Franke Bengt Edward Ernst
- 👤 Sumpter Walter Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/02; C22B23/025
Claims Analysis
Total Claims: 0
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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) | 1949-08-26 | 1950-02-25 | 1950-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-26 | 1954-02-25 | 1954-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-26 | 1958-02-25 | 1958-08-27 | $7700.00 | Window Closed / Lapsed |