US3254972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl lead antiknock appreciators
Assignee: EIDP Inc
•
Filing: 1962-04-03
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Granted: 1966-06-07
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Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 Edmund L Niedzielski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:57
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/007; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/205; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
MOTOR FUEL COMPOSITIONS COMPRISING A MIXTURE OF HYDROCARBONS IN THE GASOLINE BOILING RANGE HAVING AT LEAST 15% BY VOLUME AROMATIC HYDROCARBONS, WHICH MIXTURE OF HYDROCARBONS HAS AN OCTANE RATING OF AT LEAST 80, AN ANTIKNOCK QUANTITY OF TETRAALKYL LEAD COMPOUND AND FROM 0.2 TO 1.5 THEORIES OF CHLORINE AS A CHLOROSUBSTITUTED HYDROCARBYLIDENE DIALKANOATE OF THE FORMULA
Claim 2
Dependent Claim
56 words
MOTOR FUEL COMPOSITIONS COMPRISING A MIXTURE OF HYDROCARBONS IN THE GASOLINE BOILING RANGE HAVING AT LEAST 15% BY VOLUME AROMATIC HYDROCARBONS, WHICH MIXTURE OF HYDROCARBONS HAS AN OCTANE RATING OF AT LEAST 80, AN ANTIKNOCK QUANTITY OF TETRAALKYL LEAD COMPOUND AND FROM 0.2 TO 1.5 THEORIES OF CHLORINE AS A CHLOROSUBSTITUTED HYDROCARBYLIDENE DIALKANOATE OF THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |