Assignee
HCE LLC
US4 patents
Top patents by PatentIndex Score
US7910258B2Mar 22, 2011
Natural gas direct carbon fuel cell
HCE LLC11 citations83
US7467660B2Dec 23, 2008
Pumped carbon mining methane production process
HCE LLC18 citations83
US7163758B2Jan 16, 2007
Integrated plasma fuel cell process
HCE LLC6 citations61
US7641881B2Jan 5, 2010
Fertilizer production from fossil fuel with minimal carbon dioxide emission
HCE LLC1 citations51