US2058534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating hydrocarbon oils
Assignee: Individual
•
Filing: 1933-03-29
•
Granted: 1936-10-27
•
Expires: 1953-03-29
Abstract
No abstract record available.
Inventors
- 👤 Justin F Wait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/02; C10G21/00; C10G21/06; C10G21/12; C10G21/20; C10G29/04
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) | 1939-10-27 | 1940-04-27 | 1940-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-10-27 | 1944-04-27 | 1944-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-10-27 | 1948-04-27 | 1948-10-27 | $7700.00 | Window Closed / Lapsed |