US2475328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorization of oil with magnesium silicate
Assignee: ATTAPULGUS CLAY Co
•
Filing: 1947-08-12
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Granted: 1949-07-05
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Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jr William A La Lande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J21/00; B01J21/16; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2355388A
Cited
GB504614A
Cited
US2390556A
Cited
US2359343A
Cited
US2395931A
Cited
US2402804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |