Deacidification process of a natural gas
Deashing of coal by the oil agglomeration process
Dedensification and delivery unit
Dehydration of lignite or the like
Demineralization of coal
Demulsifier additive compositions for lubricants and fuels...
Demulsifiers for mixtures of middle distillates with fuel...
Demulsifiers for mixtures of middle distillates with fuel...
Demulsifiers for mixtures of middle distillates with fuel...
Demulsifying mixtures for breaking petroleum emulsions
Dense core charcoal briquet
Densification system
Densified fuel pellets
Deposit control additives and fuel compositions containing them
Deposit control and dispersant additives
Derivatives of polyether glycol esters of polycarboxylic...
Desulfurization and improvement of combustion and...
Desulfurization and sorbents for same
Desulfurization of coal using a solution of sodium chloride
Desulfurization of coke