US2484304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dewaxing oil and continuous rotary filter therefor
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-03-25
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Granted: 1949-10-11
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Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 William C Long
- 👤 Harold O Button
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:38
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/36; B; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/46; B01D33/463; B01D33/466; B01D37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |