US2338384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichloroethyl ether extraction process
Assignee: Standard Oil Co
•
Filing: 1942-10-29
•
Granted: 1944-01-04
•
Expires: 1962-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robinson Jack
- 👤 Lowery Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12
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) | 1947-01-03 | 1947-07-05 | 1948-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-03 | 1951-07-05 | 1952-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-03 | 1955-07-05 | 1956-01-04 | $7700.00 | Window Closed / Lapsed |