Patent ID: 8197788

Claim:
A feedstock composition for use in the production of a raw coke having such a structure that the graphitized product resulting from graphitization of the raw coke at a temperature of 2800° C. under an inactive gas atmosphere will have ratios of the crystallite size to the lattice constant of 360 or less in the (002) plane and 1500 or less in the (110) plane, the feedstock composition comprising: a first heavy oil with an initial boiling point of 200° C. or higher produced by hydrodesulfurizing a heavy oil with a sulfur content of 2 percent by mass or more at a total pressure of 16 MPa or greater so that the hydrocracking rate will be 30 percent or less, and a second heavy oil with an initial boiling point of 150° C. or higher and a sulfur content of 0.5 percent by mass or less, produced by fluidized catalytic cracking a hydrocarbon oil.