Inventor
KUGE TOSHIO
JP4 patents
Patents
4 patentsUS4511363AApr 16, 1985
Method of upgrading low-rank coal
HITACHI LTD33 citations92
US4523927AJun 18, 1985
Method of coal upgrading
HITACHI LTD20 citations81
US4668244AMay 26, 1987
Method and apparatus for upgrading low rank coal
HITACHI LTD21 citations78
US4461627AJul 24, 1984
Upgrading method of low-rank coal
HITACHI LTD6 citations62