Inventor
HOFMANN JOHN E
US13 patents
⚠️ This page may combine multiple inventors who share the name “HOFMANN JOHN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLEAN DIESEL TECH INC
4 patentsUS6361754B1Mar 26, 2002
Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction
CLEAN DIESEL TECH INC168 citations98
US6203770B1Mar 20, 2001
Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction
CLEAN DIESEL TECH INC143 citations98
US5976475ANov 2, 1999
Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
CLEAN DIESEL TECH INC231 citations98
US5968464AOct 19, 1999
Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction
CLEAN DIESEL TECH INC146 citations98
NALCO FUEL TECH
4 patentsUS5543123AAug 6, 1996
Low pressure formation of a urea hydrolysate for nitrogen oxides reduction
NALCO FUEL TECH53 citations95
US5048432ASep 17, 1991
Process and apparatus for the thermal decomposition of nitrous oxide
NALCO FUEL TECH44 citations92
US5658547AAug 19, 1997
Simplified efficient process for reducing NOx, SOx, and particulates
NALCO FUEL TECH41 citations91
US5229090AJul 20, 1993
Process for nitrogen oxides reduction to lowest achievable level
NALCO FUEL TECH6 citations62
FUEL TECH INC
4 patentsUS5139754AAug 18, 1992
Catalytic/non-catalytic combination process for nitrogen oxides reduction
FUEL TECH INC46 citations94
US5286467AFeb 15, 1994
Highly efficient hybrid process for nitrogen oxides reduction
FUEL TECH INC37 citations92
US4997631AMar 5, 1991
Process for reducing nitrogen oxides without generating nitrous oxide
FUEL TECH INC35 citations92
US4978514ADec 18, 1990
Combined catalytic/non-catalytic process for nitrogen oxides reduction
FUEL TECH INC53 citations90