Assignee
BECHTEL GROUP INC
US32 patents
Top patents by PatentIndex Score
US5518828AMay 21, 1996
Thermal integration of an air-cooled fuel cell stack
BECHTEL GROUP INC73 citations96
US5630862AMay 20, 1997
Method of providing fuel for an iron making process
BECHTEL GROUP INC31 citations92
US5470375ANov 28, 1995
Method of processing waste material containing non ferrous metal oxides
BECHTEL GROUP INC26 citations92
US5413622AMay 9, 1995
Method of making hot metals with totally recycled gas
BECHTEL GROUP INC22 citations92
US5380352AJan 10, 1995
Method of using rubber tires in an iron making process
BECHTEL GROUP INC23 citations92
US5338336AAug 16, 1994
Method of processing electric arc furnace dust and providing fuel for an iron making process
BECHTEL GROUP INC29 citations92
US5259864ANov 9, 1993
Method of disposing of environmentally undesirable material and providing fuel for an iron making process e.g. petroleum coke
BECHTEL GROUP INC36 citations92
US5686056ANov 11, 1997
Methods and apparatus for purifying hydrogen sulfide
BECHTEL GROUP INC19 citations89
US5596704AJan 21, 1997
Process flow diagram generator
BECHTEL GROUP INC146 citations88
US7374742B2May 20, 2008
Direct sulfur recovery system
BECHTEL GROUP INC22 citations86
US5470445ANov 28, 1995
Electrode cap with integral tank cover for acid mist collection
BECHTEL GROUP INC22 citations86
US4804523AFeb 14, 1989
Use of seawater in flue gas desulfurization
BECHTEL GROUP INC30 citations86
US6196151B1Mar 6, 2001
Device and method for an independent module offshore mobile base
BECHTEL GROUP INC34 citations85
US4939522AJul 3, 1990
Method and system for monitoring vehicle location
BECHTEL GROUP INC30 citations83
US4913129AApr 3, 1990
Solar receiver having wind loss protection
BECHTEL GROUP INC41 citations83
US4844840AJul 4, 1989
Method and structure for hazardous waste containment
BECHTEL GROUP INC40 citations81
US5220782AJun 22, 1993
Efficient low temperature solvent removal of acid gases
BECHTEL GROUP INC16 citations79
US5558696ASep 24, 1996
Method of direct steel making from liquid iron
BECHTEL GROUP INC8 citations73
US5397376AMar 14, 1995
Method of providing fuel for an iron making process
BECHTEL GROUP INC14 citations73
US5354356AOct 11, 1994
Method of providing fuel for an iron making process
BECHTEL GROUP INC11 citations73
US5320676AJun 14, 1994
Low slag iron making process with injecting coolant
BECHTEL GROUP INC13 citations73
US5259865ANov 9, 1993
Very low slag iron making process
BECHTEL GROUP INC13 citations73
US5989414ANov 23, 1999
Self-adjusting surface fluid extraction nozzle
BECHTEL GROUP INC15 citations71
US5289676AMar 1, 1994
Efficient low temperature solvent removal of acid gases
BECHTEL GROUP INC13 citations71
US5148681ASep 22, 1992
Passive emergency ventilation system
BECHTEL GROUP INC19 citations69
US5609738AMar 11, 1997
Electrode cap with integral tank cover for acid mist collection
BECHTEL GROUP INC13 citations67
US4932464AJun 12, 1990
Method and system for preheating combustion air
BECHTEL GROUP INC18 citations63
US4906388AMar 6, 1990
Sewage sludge dewatering process
BECHTEL GROUP INC16 citations63
US6197088B1Mar 6, 2001
Producing liquid iron having a low sulfur content
BECHTEL GROUP INC6 citations62
US5429658AJul 4, 1995
Method of making iron from oily steel and iron ferrous waste
BECHTEL GROUP INC5 citations62
US4953356ASep 4, 1990
Geothermal reboiler apparatus and method
BECHTEL GROUP INC4 citations52
US5066310ANov 19, 1991
Method for recovering light hydrocarbons from coal agglomerates
BECHTEL GROUP INC1 citations41