Robert W. Bachtel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A hydrocracking process of improved flexibility comprises three hydroprocessing stages and a fractionating zone such that the effluent from the first hydroprocessing stage is fractionated into a first fraction consisting of gasoline and lower boiling components, a second fraction, the residuum, having a normal boiling point greater than about 700.degree. F. (370.degree. C.), and a third fraction, the middle and heavy distillate, consisting of the remainder of the effluent of the first hydroprocessing stage. The second fraction undergoes hydrocracking in a second hydroprocessing stage with recycle of the effluent from said second hydroprocessing stage to the fractionation zone, and the third fraction undergoes hydrocracking in a third hydrocracking stage.