US2106964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal dewaxing of oils
Assignee: Standard Oil Development Co
•
Filing: 1934-06-14
•
Granted: 1938-02-01
•
Expires: 1954-06-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:53
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/08; B01; B01D; B01D11/00; B01D11/04; B01D11/0476; B01D11/048; B04B1/00; Y; Y10; Y10S; Y10S494/00; Y10S494/901
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) | 1941-01-31 | 1941-08-02 | 1942-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-31 | 1945-08-02 | 1946-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-31 | 1949-08-02 | 1950-02-01 | $7700.00 | Window Closed / Lapsed |