Patent US3428565A successfully refreshed from Google Patents.
US3428565A
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US
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Lubricating compositions
Assignee: Citgo Petroleum Corp
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Filing: 1966-02-24
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Granted: 1969-02-18
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Robert L Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:04
CPC Classifications
C; C10; C10M; C10M5/00; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/10; C10M2207/16; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2050/00; C10N2050/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3175972A
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US2211254A
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US2350571A
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US2762775A
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US3080330A
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US3078237A
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US3258319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |