Inventor
CHA CHANG YUL
US30 patents
⚠️ This page may combine multiple inventors who share the name “CHA CHANG YUL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
(unassigned)
10 patentsUS6592723B2Jul 15, 2003
Process for efficient microwave hydrogen production
45 citations96
US6187988B1Feb 13, 2001
Process for microwave decomposition of hazardous matter
79 citations96
US5767470AJun 16, 1998
Process and device for removal of combustion pollutants under high oxygen conditions
49 citations96
US6830662B2Dec 14, 2004
Process for microwave destruction of harmful agents and waste
24 citations92
US6783632B2Aug 31, 2004
Process for efficient microwave hydrogen production
24 citations92
US6419799B1Jul 16, 2002
Process for microwave gas purification
25 citations92
US6207023B1Mar 27, 2001
Process for microwave air purification
32 citations92
US6027698AFeb 22, 2000
Process and device for removal of combustion pollutants under high oxygen conditions
29 citations92
US6045663AApr 4, 2000
Process for microwave enhancement of wet oxidation
12 citations74
US5688332ANov 18, 1997
Pipe cleaning using microwave energy
8 citations74
OCCIDENTAL OIL SHALE INC
6 patentsUS4036299AJul 19, 1977
Enriching off gas from oil shale retort
OCCIDENTAL OIL SHALE INC29 citations82
US4105072AAug 8, 1978
Process for recovering carbonaceous values from post in situ oil shale retorting
OCCIDENTAL OIL SHALE INC14 citations74
US4089375AMay 16, 1978
In situ retorting with water vaporized in situ
OCCIDENTAL OIL SHALE INC7 citations74
US4086962AMay 2, 1978
Decreasing hydrogen sulfide concentration of a gas
OCCIDENTAL OIL SHALE INC8 citations74
US4076312AFeb 28, 1978
Method and apparatus for retorting oil shale at subatmospheric pressure
OCCIDENTAL OIL SHALE INC16 citations74
US4119345AOct 10, 1978
In situ oil shale retorting process using introduction of gas at an intermediate location
OCCIDENTAL OIL SHALE INC4 citations62
CHA CHANG YUL
5 patentsUS7303684B2Dec 4, 2007
Process for microwave alternative destruction-adsorption
CHA CHANG YUL12 citations83
US8771503B2Jul 8, 2014
Process and system for recovering oil from tar sands using microwave energy
CHA CHANG YUL4 citations64
US8653148B2Feb 18, 2014
Microwave process and apparatus for breaking emulsions
CHA CHANG YUL2 citations62
US8431083B2Apr 30, 2013
Microwave induced destruction of siloxanes and hydrogen sulfide in biogas
CHA CHANG YUL1 citations62
US8168126B2May 1, 2012
Apparatus for microwave induced destruction of siloxanes and hydrogen sulfide in biogas
CHA CHANG YUL3 citations62
OCCIDENTAL PETROLEUM CORP
4 patentsUS4005752AFeb 1, 1977
Method of igniting in situ oil shale retort with fuel rich flue gas
OCCIDENTAL PETROLEUM CORP404 citations99
US3941421AMar 2, 1976
Apparatus for obtaining uniform gas flow through an in situ oil shale retort
OCCIDENTAL PETROLEUM CORP182 citations99
US4014575AMar 29, 1977
System for fuel and products of oil shale retort
OCCIDENTAL PETROLEUM CORP150 citations96
US3994343ANov 30, 1976
Process for in situ oil shale retorting with off gas recycling
OCCIDENTAL PETROLEUM CORP29 citations82
CHA CORP
4 patentsUS6284202B1Sep 4, 2001
Device for microwave removal of NOx from exhaust gas
CHA CORP40 citations89
US6046376AApr 4, 2000
Process for microwave enhancement of gaseous decomposition reactions in solutions
CHA CORP6 citations70
US7960303B2Jun 14, 2011
Microwave induced destruction of siloxanes and hydrogen sulfide in biogas
CHA CORP2 citations62
US7641874B2Jan 5, 2010
Microwave induced destruction of impurities from biogas and nitrogen oxides from engine exhaust
CHA CORP6 citations62