US2353587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting foaming of viscous petroleum oil
Assignee: ExxonMobil Oil Corp
•
Filing: 1941-02-19
•
Granted: 1944-07-11
•
Expires: 1961-02-19
Abstract
No abstract record available.
Inventors
- 👤 Carroll N Rill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:14
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08
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) | 1947-07-11 | 1948-01-10 | 1948-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-11 | 1952-01-10 | 1952-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-11 | 1956-01-10 | 1956-07-11 | $7700.00 | Window Closed / Lapsed |