Patent US2933380A successfully refreshed from Google Patents.
US2933380A
Expired / Lapsed
US
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Motor fuels
Assignee: EIDP Inc
•
Filing: 1955-06-22
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Granted: 1960-04-19
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Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Matthew R Kegelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:54
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10L1/20; C10L1/201; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A MOTOR FUEL CONSISTING ESSENTIALLY OF HYDROCARBONS IN THE GASOLINE BOILING RANGE, TETRAETHYL LEAD, A HALOHYDROCARBON LEAD SCAVENGING AGENT, AND FROM ABOUT 0.003% TO ABOUT 0.3% BY WEIGHT OF AT LEAST ONE OLEYLSALICYLATE OF AN ALKALINE EARTH METAL OF AN ATOMIC NUMBER FROM 20 TO 56.
Claim 2
Dependent Claim
46 words
A MOTOR FUEL CONSISTING ESSENTIALLY OF HYDROCARBONS IN THE GASOLINE BOILING RANGE, TETRAETHYL LEAD, A HALOHYDROCARBON LEAD SCAVENGING AGENT, AND FROM ABOUT 0.003% TO ABOUT 0.3% BY WEIGHT OF AT LEAST ONE OLEYLSALICYLATE OF AN ALKALINE EARTH METAL OF AN ATOMIC NUMBER FROM 20 TO 56.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |