HARDLY GRAPHITIZABLE CARBONACEOUS MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES FULLY CHARGED TO BE USED, METHOD FOR PRODUCING SAME, NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY FULLY CHARGED TO BE USED

A hardly graphitizable carbonaceous material can be used in a negative electrode material for nonaqueous electrolyte secondary batteries (for example, a lithium ion battery) having not only high charge capacity but also high charge-discharge efficiency and being fully charged to be used and a method for producing the same. Such hardly graphitizable carbonaceous material may have an oxygen element content of 0.25% by mass or less.