Haloalkyl hydroxy-aromatic condensation products as fuel additiv

Halogenated hydrocarbon containing fuel supplement and/or...

Halogenated substituted fulvenes useful as fuel antiknock additi

Hand pressing device for making fuel briquettes from soaked pape

Hardware/software monitoring system

Heat activated perfume candle

Heating and cooking apparatus and fuel composition for use there

Heating element

Heating means

Heating medium and use of the same

Heating unit and fertilizer preparation

Heating with steam

Heavy fuel-oil compositions having an improved stability under s

Heavy hydrocarbon emulsions and stable petroleum coke slurries t

Heavy oil emulsion fuel and process for production thereof

Heavy oil emulsion fuel composition

Heavy oils having improved properties and an additive therefor

Helium smoke generator

Heterocyclic compounds containing nitrogen as a fuel...

Heterocyclic compounds useful as additives for lubricant and fue