Patent US3448050A successfully refreshed from Google Patents.
US3448050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil containing polymer of styrene or indene and a higher alpha olefin,as a pour depressant
Assignee: Sinclair Research Inc
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Filing: 1966-08-22
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Granted: 1969-06-03
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Thomas J Clough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:06
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C10L1/165; C10L1/1666; C10M2205/00; C10M2205/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2655549A
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US2651628A
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US2697694A
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US2862915A
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US2756265A
Cited
US2786032A
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US3051690A
Cited
US3037850A
Cited
US3157624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |