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US2470688A
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Alkali-alkaline earth hydroxide-impregnated carbon catalyst and its preparation
Assignee: American Magnesium Metals Corp
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Filing: 1946-06-15
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Granted: 1949-05-17
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Expires: 1966-06-15
Abstract
No abstract record available.
Inventors
- 👤 Carter Austin George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:50
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; C; C07; C07C; C07C51/00; C07C51/347; C07C51/377; C07C51/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2200463A
Cited
US1626848A
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US1926587A
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US2056854A
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US2216437A
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US2395875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |