Patent US3849085A successfully refreshed from Google Patents.
US3849085A
Expired / Lapsed
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Motor fuel composition
Assignee: Texaco Inc
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Filing: 1972-05-08
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Granted: 1974-11-19
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Expires: 1992-05-08
Abstract
Abstract Motor fuel composition for a spark-ignited reciprocating internal combustion engine containing a high molecular weight aliphatic hydrocarbon substituted or alkylated phenol in which the aliphatic hydrocarbon radical has a molecular weight in the range from about 500 to 3,500 effective to prevent or inhibit intake manifold and intake valve and port deposits.
Inventors
- 👤 K Kreuz
- 👤 M Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:04
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
A MOTOR FUEL COMPOSITION COMPRISING A MIXTURE OF HYDROCARBONS IN THE GASOLINE BOILING RANGE CONTAINING FROM ABOUT 0.01 TO 0.25 VOLUME PERCENT BASED ON SAID COMPOSITION OF A SATURATED ALIPHTIC HYDROCARBON SUBSTITUTED PHENOL REPRESENTED BY THE FORMULA: (HO-)A,(R-(A)B-)BENZENE IN WHICH A REPRESENTS AN INTEGER FROM 1 TO 2, A REPRESENTS A LOWER ALIPHATIC RADICAL HAVING FROM 1 TO 4 CARBON ATOMS, B IS AN INTEGER FROM 0 TO 1; R REPRESENTS AN ALIPHATIC HYDROCARBON RADICAL HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 500 TO 3.500 AND THE RESIDUAL OPEN BONDS ARE SATISFIED BY HYDROGEN ATOMS.
Claim 2
Dependent Claim
95 words
A MOTOR FUEL COMPOSITION COMPRISING A MIXTURE OF HYDROCARBONS IN THE GASOLINE BOILING RANGE CONTAINING FROM ABOUT 0.01 TO 0.25 VOLUME PERCENT BASED ON SAID COMPOSITION OF A SATURATED ALIPHTIC HYDROCARBON SUBSTITUTED PHENOL REPRESENTED BY THE FORMULA: (HO-)A,(R-(A)B-)BENZENE IN WHICH A REPRESENTS AN INTEGER FROM 1 TO 2, A REPRESENTS A LOWER ALIPHATIC RADICAL HAVING FROM 1 TO 4 CARBON ATOMS, B IS AN INTEGER FROM 0 TO 1; R REPRESENTS AN ALIPHATIC HYDROCARBON RADICAL HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 500 TO 3.500 AND THE RESIDUAL OPEN BONDS ARE SATISFIED BY HYDROGEN ATOMS.
Claim 3
Dependent Claim
37 words
A motor fuel composition according to claim 1 in which said substituted phenol has the formula: (HO)a-N-(A)bR in which N represents a single-ring aromatic nucleus and a, b, and R have the values given in claim 1.
Claim 4
Dependent Claim
16 words
A motor fuel composition according to claim 1 in which said substituted phenol has the formula:
Claim 5
Dependent Claim
22 words
A motor fuel composition according to claim 1 in which R has an average molecular weight ranging from about 750 to 1,500.
Claim 6
Dependent Claim
15 words
A motor fuel composition according to claim 1 in which R is derived from polypropylene.
Claim 7
Dependent Claim
15 words
A motor fuel composition according to claim 1 in which R is derived from polyisobutylene.
Claim 8
Dependent Claim
19 words
A motor fuel composition according to claim 1 in which R is derived from a mixture of polyolefin polymers.
Claim 9
Dependent Claim
15 words
A motor fuel composition according to claim 1 in which A represents a methyl radical.
Claim 10
Dependent Claim
24 words
A motor fuel composition according to claim 1 in which R has an average molecular weight in the range from about 800 to 1,200.
Claim 11
Dependent Claim
21 words
A motor fuel composition according to claim 1 in which R is derived from polypropylene of about 850 average molecular weight.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |