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Patent US3544467A successfully refreshed from Google Patents.
US3544467A
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Acid-amide pour point depressants
Assignee: Chevron USA Inc
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Filing: 1968-10-31
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Granted: 1970-12-01
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Expires: 1988-10-31
Abstract
No abstract record available.
Inventors
- 👤 George J Kautsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10L1/143; C10M; C10M161/00; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10L1/196; C10L1/1963; C10L1/1966; C10L1/197; C10L1/1973; C10L1/234; C10L1/238; C10L1/2383; C10M2205/00; C10M2205/02; C10M2205/028; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2215/00; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |