US3025239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum oil composition
Assignee: Sinclair Refining Co
•
Filing: 1957-08-28
•
Granted: 1962-03-13
•
Expires: 1977-08-28
Abstract
No abstract record available.
Inventors
- 👤 David B Sheldahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:30
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A LIQUID PETROLEUM OIL CONTAINING A MINOR CORROSION-INHIBITING AMOUNT OF A COMPOUND SELECTED FROM THE FORMULAE CONSISTING OF
Claim 2
Dependent Claim
18 words
A LIQUID PETROLEUM OIL CONTAINING A MINOR CORROSION-INHIBITING AMOUNT OF A COMPOUND SELECTED FROM THE FORMULAE CONSISTING OF
References Cited (Backward Citations)
US2270681A
Cited
US2329406A
Cited
US2321496A
Cited
US2391830A
Cited
US2467118A
Cited
US2533303A
Cited
US2582733A
Cited
US2632694A
Cited
US2736658A
Cited
US2721843A
Cited
US2840584A
Cited
US2882227A
Cited
US2798045A
Cited
US2845393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |