US2451564A
Expired / Lapsed
US
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Treatment of hydrocarbons with activated magnesium silicates
Assignee: ATTAPULGUS CLAY Co
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Filing: 1946-08-13
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Granted: 1948-10-19
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Expires: 1966-08-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William A La Lande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J21/16; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G25/00; C10G25/003; C10G35/00; C10G35/04; C10G35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2355388A
Cited
GB504614A
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US2324518A
Cited
US2337684A
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US2390556A
Cited
US2402804A
Cited
US2367694A
Cited
US2399261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |