We have recently presented a new coal extraction method by which some bituminous coals can be extracted up to 80% in a flowing tetralin at 350℃. It was found that the extract was almost free from mineral matters and showed the remarkable fusibility. To utilize the characteristics of the extract, we tried to produce coke from slightly caking coal or brown coal by carbonizing the mixture of the coal with its extract (20wt%). The char obtained from the mixture was much harder than the char prepared from the coal itself even in the case of brown coal, indicating the possibility of producing cokes from only slightly caking coal or brown coal. We also succeeded in forming mesophase from the extract which is the precursor of high performance carbon materials and rather expensive to produce.