Patent US3393057A successfully refreshed from Google Patents.
US3393057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil pour point depressor
Assignee: Sinclair Research Inc
•
Filing: 1963-04-11
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Granted: 1968-07-16
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Clough
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1658; C10L1/1666; C10M2205/00; C10M2205/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2379728A
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US2609359A
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US2601632A
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US2628955A
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US2656340A
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US2676950A
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US3042505A
Cited
US3069245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |