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Class Information
Number: 44/346
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.) > Polymeric or copolymeric compound having plural occurrences of the hetero ring (e.g., alpha-olefin maleimide copolymers, etc.)
Description: Compositions wherein the five-membered hetero ring is present plural times in a polymeric or copolymeric compound.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7175678 |
Fuel composition |
Feb. 13, 2007 |
| 6906011 |
Polymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagent |
Jun. 14, 2005 |
| 6899115 |
Method and filling station for filling a motor vehicle with gaseous fuel |
May. 31, 2005 |
| 6676715 |
Diesel fuel stabilizer |
Jan. 13, 2004 |
| 6565616 |
Copolymer blends and their use as additives for improving the cold flow properties of middle distillates |
May. 20, 2003 |
| 6165672 |
Maleimide or alicyclic olefin-based monomers, copolymer resin of these monomers and photoresist using the resin |
Dec. 26, 2000 |
| 6143043 |
Cloud point depressants for middle distillate fuels |
Nov. 7, 2000 |
| 6107450 |
Polyalkylene succinimides and post-treated derivatives thereof |
Aug. 22, 2000 |
| 6071993 |
Paraffin dispersants for crude oil middle distillates |
Jun. 6, 2000 |
| 5849047 |
Polymeric dispersants and method of making same |
Dec. 15, 1998 |
| 5766273 |
Polymer blends and their use as additives for mineral oil middle distillates |
Jun. 16, 1998 |
| 5716912 |
Polyalkylene succinimides and post-treated derivatives thereof |
Feb. 10, 1998 |
| 5476521 |
Branched amido-amine dispersant additives (PT-739) |
Dec. 19, 1995 |
| 5368615 |
High molecular weight nitrogen-containing condensates and fuels and lubricants containing same |
Nov. 29, 1994 |
| 5294233 |
Additive for organic medium or thermoplastic polymer |
Mar. 15, 1994 |
| 5266081 |
Multifunctional ashless dispersants |
Nov. 30, 1993 |
| 5160349 |
Olefin/maleic anhydride copolymer heterocyclic-azoles as antiwear additives, and fuel compositions |
Nov. 3, 1992 |
| 5112507 |
Polymeric dispersants having alternating polyalkylene and succinic groups |
May. 12, 1992 |
| 4900332 |
Nitrogenous copolymers, their preparation and use as additives for improving the pour properties of hydrocarbon middle distillates |
Feb. 13, 1990 |
| 4798612 |
Modified succinimides (x) |
Jan. 17, 1989 |
| 4747850 |
Modified succinimides in fuel composition |
May. 31, 1988 |
| 4731095 |
Nitrogen containing copolymers useful as additives for lowering the cloud point of hydrocarbon middle distillates and compositions containing them |
Mar. 15, 1988 |
| 4659334 |
Particulate compositions used in petroleum systems comprising encapsulated materials |
Apr. 21, 1987 |
| 4575382 |
Thermal stabilized vegetable oil extended diesel fuels |
Mar. 11, 1986 |
| 4556499 |
Process for improving the flow properties of mineral oils |
Dec. 3, 1985 |
| 4537601 |
Antistats containing acrylonitrile copolymers and polyamines |
Aug. 27, 1985 |
| 4522735 |
Polyphosphoramidite oligomers and stabilizer compositions thereof |
Jun. 11, 1985 |
| 4518509 |
Particulate compositions |
May. 21, 1985 |
| 4511369 |
Copolymers with nitrogen groups, useful as additives for decreasing the cloud point of hydrocarbon middle distillates and compositions containing them |
Apr. 16, 1985 |
| 4491651 |
Antistats containing acrylonitrile copolymers and polyamines |
Jan. 1, 1985 |
| 4440625 |
Method for minimizing fouling of heat exchanges |
Apr. 3, 1984 |
| 4416668 |
Antistatic agents for organic liquids |
Nov. 22, 1983 |
| 4397750 |
N-Hydroxyalkyl pyrrolidinone esters as detergent compositions and lubricants and fuel containing same |
Aug. 9, 1983 |
| 4359325 |
Copolymers from acrylate dicarboxylic compounds and diisobutylene as oil additives |
Nov. 16, 1982 |
| 4261703 |
Additive combinations and fuels containing them |
Apr. 14, 1981 |
| 4259087 |
Antistats containing acrylonitrile copolymers and polyamines |
Mar. 31, 1981 |
| 4146489 |
Polyolefin graft copolymers |
Mar. 27, 1979 |
| 4090946 |
Method of stabilizing mineral oil and its refinery products |
May. 23, 1978 |
| 4081456 |
Bis-lactam derivatives |
Mar. 28, 1978 |
| 4059574 |
Symmetric azo-bis-mercapto compounds |
Nov. 22, 1977 |
| 4040799 |
Cyclohexlamines used as fuel additives |
Aug. 9, 1977 |
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