US2405959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating hydrocarbon fluid
Assignee: Standard Oil Development Co
•
Filing: 1940-08-24
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Granted: 1946-08-20
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Expires: 1960-08-24
Abstract
No abstract record available.
Inventors
- 👤 Paul E Kuhl
- 👤 Robert M Shepardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:10
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J19/00; B01J19/24; B01J19/2415; B01J19/243; B01J8/005; B01J8/0065; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00105; B01J2219/00114
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) | 1949-08-19 | 1950-02-18 | 1950-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-19 | 1954-02-18 | 1954-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-19 | 1958-02-18 | 1958-08-20 | $7700.00 | Window Closed / Lapsed |