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US2462277A
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Method of preparing an activated magnesium oxide
Assignee: Individual
•
Filing: 1946-11-27
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Granted: 1949-02-22
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Expires: 1966-11-27
Abstract
No abstract record available.
Inventors
- 👤 John J Naugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:56
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/02; B; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/041; B01J20/30; B01J20/3071; B01J20/3078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1863966A
Cited
US2210892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |