US3256175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lubricating oils from aromatic extracts
Assignee: Chevron USA Inc
•
Filing: 1964-10-23
•
Granted: 1966-06-14
•
Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 Robert H Kozlowski
- 👤 Robert L Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:51
CPC Classifications
C; C10; C10G; C10G67/00; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706167A
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US2905625A
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US2905636A
Cited
US2983676A
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US2988501A
Cited
US3004913A
Cited
US3014860A
Cited
US3046218A
Cited
US2944006A
Cited
US3094480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |