Patent US3055748A successfully refreshed from Google Patents.
US3055748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel for spark ignition engines
Assignee: Gulf Research and Development Co
•
Filing: 1960-05-12
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Granted: 1962-09-25
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Expires: 1980-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hartle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A GASOLINE MOTOR FUEL COMPRISING A MAJOR AMOUNT OF GASOLINE AND A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE OCTANE RATING OF SAID GASOLINE, OF AN ORGANOLEAD SALT OF A SUBSTITUTED ACID OF PHOSPHOROUS HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
37 words
A GASOLINE MOTOR FUEL COMPRISING A MAJOR AMOUNT OF GASOLINE AND A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE OCTANE RATING OF SAID GASOLINE, OF AN ORGANOLEAD SALT OF A SUBSTITUTED ACID OF PHOSPHOROUS HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
CA572002A
Cited
US2280474A
Cited
US2301370A
Cited
US2560542A
Cited
US2794720A
Cited
US2863745A
Cited
US2784208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |