Patent US1767049A successfully refreshed from Google Patents.
Patent US3615294A successfully refreshed from Google Patents.
US3615294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent motor fuel containing substituted ureas
Assignee: Texaco Inc
•
Filing: 1970-03-26
•
Granted: 1971-10-26
•
Expires: 1990-03-26
Abstract
Abstract A class of substituted ureas represented by the formula: IN WHICH X HAS A VALUE FROM TWO TO FOUR, R is hydrogen or a hydrocarbyl radical and R'' and R'''' are hydrocarbyl radicals having from eight to 20 carbon atoms have been found to be useful as carburetor detergents in a motor fuel composition.
Inventors
- 👤 Ronald W Von Allmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:31
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2227
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A motor fuel composition according to claim 1 in which x has a value of 3 and R'' and R'''' are aliphatic hydrocarbon radicals.
Claim 2
Dependent Claim
20 words
A motor fuel composition according to claim 1 containing from about 0.0005 to 0.05 weight percent of said substituted urea.
Claim 3
Dependent Claim
29 words
A motor fuel composition according to claim 1 in which x has a value of 3 and R'' and R'''' are aliphatic hydrocarbon radicals having from 10-15 carbon atoms.
Claim 4
Dependent Claim
16 words
A motor fuel composition according to claim 1 in which said substituted urea is 3,3''-di(cocoamino) di-n-propylurea.
Claim 5
Dependent Claim
15 words
A motor fuel composition according to claim 1 in which said substituted urea is 3,3''-di''(sec.(c10-C15)alkylamino)-di-n-propylurea.
Claim 6
Dependent Claim
14 words
A motor fuel according to claim 1 in which said substituted urea is 3,3''-di(oleylamino)-di-n-propylurea.
References Cited (Backward Citations)
US2839372A
Cited
US3468639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |