USPC Class Details

Description: 44 fuel and related compositions / 44 fuel and related compositions/(300) liquid fuels (excluding fuels that are exclusively mixtures of liquid hydrocarbons) (385) containing organic -c(=o)o- compound (e.g., fatty acids, etc.) (388) the single bonded oxygen is bonded directly to an additional carbon, which carbon may be single bonded to any element but may be multiple bonded only to carbon (i.e., carboxylic acid esters) (389) plural -c(=o)o- groups attached to each other directly or indirectly by nonionic bonding (e.g., polyesters, half ester-half acid compounds, etc.) (393) copolymer of olefinically unsaturated hydrocarbon monomer and additional monomer (e.g., ethylene-vinyl acetate copolymers, etc.) (394) with organic nitrogen compound

Hierarchy/Derived subclasses

44 / 300-> 385-> 388-> 389-> 393-> 394

uspto searches

Patent Apps in 44/394

Granted Patents in 44/394

Use the links above or do an advanced search in ppubs for:
(44/394.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.
Display:

Back