US3864098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel additives
Assignee: Chevron USA Inc
•
Filing: 1974-01-07
•
Granted: 1975-02-04
•
Expires: 1994-01-07
Abstract
Abstract N-hydrocarbyl-N-heterocyclic polyamines are found to display detergency in the internal combustion engine when present in fuels to the extent of 10-4,000 ppm. The nitrogenous composition is composed of a hydrocarbyl group bonded to a nitrogen atom, which is itself attached to a heterocyclic polyamine. the hydrocarbyl substituent contains from 30 to about 300 carbon atoms.
Inventors
- 👤 Lewis R Honnen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:58
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/238; C10L1/2383
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
15 words
A fuel composition according to claim 1 wherein said N-heterocyclic polyamine contains a six-membered ring.
Claim 2
Dependent Claim
15 words
A fuel composition according to claim 1 wherein said N-heterocyclic polyamine contains a five-membered ring.
Claim 3
Dependent Claim
29 words
A fuel composition according to claim 1 wherein said hydrocarbyl substituent is a polyolefin, derived from C2-C6 olefins, with the proviso that ethylene is copolymerized with a higher olefin.
Claim 4
Dependent Claim
14 words
A fuel composition according to claim 4, wherein said polyolefin is polybutene or polypropylene.
Claim 5
Dependent Claim
14 words
A fuel composition according to claim 2 wherein said N-heterocyclic polyamine is an amino-morpholine.
Claim 6
Dependent Claim
14 words
A fuel composition according to claim 2 wherein said N-heterocyclic polyamine is an amino-pyridine.
Claim 7
Dependent Claim
14 words
A fuel composition according to claim 2 wherein said N-heterocyclic polyamine is an amino-piperidine.
Claim 8
Dependent Claim
14 words
A fuel composition according to claim 2 wherein said N-heterocyclic polyamine is a triazine.
Claim 9
Dependent Claim
13 words
A fuel composition according to claim 1 wherein said N-heterocyclic polyamine is cyclohexamethylenetetramine.
Claim 10
Dependent Claim
15 words
A fuel composition according to claim 3 wherein said N-heterocyclic polyamine is an aminoalkylene imidazoline.
Claim 11
Dependent Claim
14 words
A fuel composition according to claim 3 wherein said N-heterocyclic polyamine is an amino-pyrrolidine.
Claim 12
Dependent Claim
17 words
A fuel composition according to claim 1 wherein said N-heterocyclic polyamine is an amino-azetidine or an amino-aziridine.
Claim 13
Dependent Claim
60 words
A fuel concentrate composition having a suitable solvent for admixture with a hydrocarbon fuel and from 10 to 70 weight percent of a N-hydrocarbyl-N-heterocyclic polyamine, other than piperazine, wherein said N-heterocyclic polyamine contains from 2 to aobut 6 nitrogen atoms and from 2 to about 30 carbon atoms, and said hydrocarbyl substituent contains from 30 to about 300 carbon atoms.
References Cited (Backward Citations)
US3202681A
Cited
US3141745A
Cited
US3156687A
Cited
US3275554A
Cited
US3415750A
Cited
US3574576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |