US2168875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating oils
Assignee: ExxonMobil Oil Corp
•
Filing: 1937-07-08
•
Granted: 1939-08-08
•
Expires: 1957-07-08
Abstract
No abstract record available.
Inventors
- 👤 Henry D Noll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:17
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0473; C; C10; C10G; C10G21/00; C10G21/02; C10G21/04; Y; Y10; Y10S; Y10S159/00; Y10S159/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-08-07 | 1943-02-06 | 1943-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-07 | 1947-02-06 | 1947-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-07 | 1951-02-06 | 1951-08-08 | $7700.00 | Window Closed / Lapsed |