US2480904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of magnesium oxide
Assignee: Marine Magnesium Products Corp
•
Filing: 1946-06-25
•
Granted: 1949-09-06
•
Expires: 1966-06-25
Abstract
No abstract record available.
Inventors
- 👤 Robert E Clarke
- 👤 Neil R Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/10; C04B2/102; C01; C01F; C01F5/00; C01F5/02; C01F5/06; C01F5/08; C01P; C01P2004/00; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1573632A
Cited
US2234367A
Cited
US2139934A
Cited
US2322554A
Cited
US2357987A
Cited
US2322555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |