Inventor

GRAHAM RICHARD H

3 patents

Patents

3 patents

US4299285ANov 10, 1981

Underground gasification of bituminous coal

GULF RESEARCH DEVELOPMENT CO290 citations96

US4313499AFeb 2, 1982

Subterranean gasification of bituminous coal

GULF RESEARCH DEVELOPMENT CO8 citations71

US4296809AOct 27, 1981

In situ gasification of bituminous coal

GULF RESEARCH DEVELOPMENT CO11 citations71