Patent US2180374A successfully refreshed from Google Patents.
US2180374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of liquid saturated hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1938-11-19
•
Granted: 1939-11-21
•
Expires: 1958-11-19
Abstract
No abstract record available.
Inventors
- 👤 Eldon E Stahly
- 👤 Erwin M Hattox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/125; C07C2527/126; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-11-20 | 1943-05-22 | 1943-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-20 | 1947-05-22 | 1947-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-20 | 1951-05-22 | 1951-11-21 | $7700.00 | Window Closed / Lapsed |