US3758624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline compositions
Assignee: Ethyl Corp
•
Filing: 1971-05-26
•
Granted: 1973-09-11
•
Expires: 1991-05-26
Abstract
Abstract A method of reducing intake valve deposits formed in a spark ignition gasoline-fueled internal combustion engine is disclosed. The method features the use of gasoline containing a deposit reducing amount of a high molecular weight alkyl aromatic hydrocarbon or mixture of alkyl aromatic hydrocarbons. The gasoline compositions and gasoline additive concentrates are also disclosed.
Inventors
- 👤 W Perilstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:31
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1608; C07; C07C; C07C15/00; C07C15/02; C07C15/107; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2527/00; C07C2527/06; C07C2527/125; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; C07C2603/22; C07C2603/24; C07C2603/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A product obtained from a process of claim 1 wherein said aromatic hydrocarbon (a) is benzene, said olefin mixture (b) ranges predominantly from about C18 to about C30, said catalyst (C) is an aluminum halide, said reaction temperature (d) is about 70*C. said product having an average molecular weight of from about 700 to about 800.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |