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Class Information
Number: 44/344
Name: Fuel and related compositions > Liquid fuels (excluding fuels that are exclusively mixtures of liquid hydrocarbons) > Heterocyclic carbon compound containing a hetero ring having chalcogen or nitrogen as the only ring hetero atoms > The hetero ring contains five members including nitrogen and carbon (e.g., pyrrolidones, porphines, etc.) > Plural nitrogens in the hetero ring (e.g., imidazolines, etc.) > Having -c(=x)-, wherein x is chalcogen or nh, attached indirectly to the hetero ring by nonionic bonding
Description: Compositions wherein the five-membered hetero ring is attached indirectly, by nonionic bonding, to carbon of a -C(=X)- group, where X is NH or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

Patents under this class:

Patent Number Title Of Patent Date Issued
7857871 Method of reducing paraffin deposition with imidazolines Dec. 28, 2010
7175678 Fuel composition Feb. 13, 2007
7112230 Fuels compositions for direct injection gasoline engines Sep. 26, 2006
5516343 Hydrocarbon compositions containing a polyetheramide additive May. 14, 1996
5489315 Fuel compositions comprising hydantoin-containing polyether alcohol additives Feb. 6, 1996
5482521 Friction modifiers and antiwear additives for fuels and lubricants Jan. 9, 1996
5478367 Fuel oil compositions Dec. 26, 1995
5336278 Fuel composition containing an aromatic amide detergent Aug. 9, 1994
5312460 Fuel compositions containing substantially straight chain alkylphenyl poly (oxypropylene) amino carbamates May. 17, 1994
5217502 Quaternary ammonium salt derived thiadiazoles as multifunctional antioxidant and antiwear additives Jun. 8, 1993
4936866 Lactone modified polymeric amines useful as oil soluble dispersant additives Jun. 26, 1990
4305731 Aminoalkylimidazoline derivatives of a sarcosine compound and a fuel composition containing same Dec. 15, 1981
4292046 Detergent compositions Sep. 29, 1981
4288612 Deposit control additives Sep. 8, 1981
4263014 Anti-rust fuel composition Apr. 21, 1981
4234321 Fuel compositions containing deposit control additives Nov. 18, 1980
4197409 Poly(oxyalkylene)aminocarbomates of alkylene polyamine Apr. 8, 1980
4191537 Fuel compositions of poly(oxyalkylene) aminocarbamate Mar. 4, 1980
4185965 Amine derivatives of hydrocarbyl lactam carboxylic acids as fuel additives Jan. 29, 1980
4160648 Fuel compositions containing deposit control additives Jul. 10, 1979
4159898 Alkyl-guanidino-heterocyclic compounds, their manufacture and use as additives for fuels and lubricants Jul. 3, 1979
4059574 Symmetric azo-bis-mercapto compounds Nov. 22, 1977
4036733 Fluorescent benzanthronic dyes Jul. 19, 1977
3946053 Hydrocarbyl hydrogen phosphate salts of amino-amides Mar. 23, 1976

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