Patent US3794473A successfully refreshed from Google Patents.
US3794473A
Expired / Lapsed
US
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Rare earth beta-ketoenolate anti-knock additives in gasolines
Assignee: Individual
•
Filing: 1972-09-20
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Granted: 1974-02-26
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Expires: 1992-09-20
Abstract
Abstract THERE IS DISCLOSEDD A MOTOR FUEL COMPOSITION WHICH CONSISTS ESSENTIALLY OF GASOLINE AND AS AN ANTIKNOCK AGENT, A SMALL AMOUNT OF A RARE EARTH B-KETOENOLATE.
Inventors
- 👤 R Sievers
- 👤 K Eisentraut
- 👤 R Tischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:28
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C07; C07C; C07C49/00; C07C49/92; C07F; C07F5/00; C07F5/003; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1814; C10L1/30; C10L1/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |