Assignee
CHIYODA CHEM ENG CONSTRUCT CO
JP121 patents
Top patents by PatentIndex Score
US4422960ADec 27, 1983
Catalysts for hydrotreatment of heavy hydrocarbon oils containing asphaltenes
CHIYODA CHEM ENG CONSTRUCT CO164 citations99
US4440631AApr 3, 1984
Process for hydrocracking heavy hydrocarbon oils and catalyst therefor
CHIYODA CHEM ENG CONSTRUCT CO151 citations97
US5689141ANov 18, 1997
Compressor drive system for a natural gas liquefaction plant having an electric motor generator to feed excess power to the main power source
CHIYODA CHEM ENG CONSTRUCT CO107 citations96
US4444655AApr 24, 1984
Hydrotreatment of heavy hydrocarbon oils containing asphaltenes, and catalysts therefor
CHIYODA CHEM ENG CONSTRUCT CO74 citations96
US4424142AJan 3, 1984
Catalyst for hydrotreatment of heavy hydrocarbon oils
CHIYODA CHEM ENG CONSTRUCT CO106 citations96
US6062041AMay 16, 2000
Method for liquefying natural gas
CHIYODA CHEM ENG CONSTRUCT CO80 citations95
US5363655ANov 15, 1994
Method for liquefying natural gas
CHIYODA CHEM ENG CONSTRUCT CO107 citations95
US5334755AAug 2, 1994
Process for the production of acetic acid from methanol and carbon monoxide using supported rhodium catalyst
CHIYODA CHEM ENG CONSTRUCT CO63 citations95
US6340437B1Jan 22, 2002
Process for preparing synthesis gas by autothermal reforming
CHIYODA CHEM ENG CONSTRUCT CO69 citations94
US5635826AJun 3, 1997
Input waveform follow-up AC power source system
CHIYODA CHEM ENG CONSTRUCT CO67 citations94
US5123836AJun 23, 1992
Method for the combustion treatment of toxic gas-containing waste gas
CHIYODA CHEM ENG CONSTRUCT CO116 citations94
US4525267AJun 25, 1985
Process for hydrocracking hydrocarbons with hydrotreatment-regeneration of spent catalyst
CHIYODA CHEM ENG CONSTRUCT CO87 citations94
US4367164AJan 4, 1983
Catalysts for hydrotreating heavy hydrocarbon oils and a method of preparing such catalysts
CHIYODA CHEM ENG CONSTRUCT CO90 citations94
US4248852AFeb 3, 1981
Process for the production of alumina suitable for use as a catalyst carrier
CHIYODA CHEM ENG CONSTRUCT CO110 citations94
US4191636AMar 4, 1980
Process for hydrotreating heavy hydrocarbon oil
CHIYODA CHEM ENG CONSTRUCT CO111 citations94
US4444015AApr 24, 1984
Method for recovering power according to a cascaded Rankine cycle by gasifying liquefied natural gas and utilizing the cold potential
CHIYODA CHEM ENG CONSTRUCT CO62 citations93
US4196102AApr 1, 1980
Catalysts for demetallization treatment of _hydrocarbons supported on sepiolite
CHIYODA CHEM ENG CONSTRUCT CO109 citations93
US4011298AMar 8, 1977
Method for simultaneous removal of SOx and NOx
CHIYODA CHEM ENG CONSTRUCT CO72 citations93
US6218335B1Apr 17, 2001
Spinel type compound oxide and method of manufacturing the same
CHIYODA CHEM ENG CONSTRUCT CO42 citations92
US5971399AOct 26, 1999
Dual density sanitary pipe gasket
CHIYODA CHEM ENG CONSTRUCT CO24 citations92
US5876469AMar 2, 1999
Method of heat transfer in reformer
CHIYODA CHEM ENG CONSTRUCT CO47 citations92
US5645802AJul 8, 1997
Method and apparatus for the treatment of a waste gas containing dists and chemical contaminants
CHIYODA CHEM ENG CONSTRUCT CO22 citations92
US5436362AJul 25, 1995
Method of producing dialkylcarbonate
CHIYODA CHEM ENG CONSTRUCT CO26 citations92
US5364963ANov 15, 1994
Supported rhodium catalyst, method of preparing same and process of producing acetic acid by methanol carbonylation using same
CHIYODA CHEM ENG CONSTRUCT CO48 citations92
US4600076AJul 15, 1986
Device for attenuating pulsation of fluids in piping systems
CHIYODA CHEM ENG CONSTRUCT CO26 citations92
US4099925AJul 11, 1978
Apparatus for desulfurization of flue gas
CHIYODA CHEM ENG CONSTRUCT CO31 citations92
US4012340AMar 15, 1977
Process for preparing catalysts for hydrodesulfurization
CHIYODA CHEM ENG CONSTRUCT CO52 citations92
US3954673AMay 4, 1976
Process for preparing catalysts for hydrodesulfurization
CHIYODA CHEM ENG CONSTRUCT CO38 citations92
US6376423B2Apr 23, 2002
Catalyst for preparation of synthesis gas and process for preparing carbon monoxide
CHIYODA CHEM ENG CONSTRUCT CO21 citations91
US6312660B1Nov 6, 2001
Process for preparing synthesis gas
CHIYODA CHEM ENG CONSTRUCT CO32 citations91
US6066762AMay 23, 2000
Process for the production of carbonyl compound
CHIYODA CHEM ENG CONSTRUCT CO45 citations91
US5036904AAug 6, 1991
Latent heat storage tank
CHIYODA CHEM ENG CONSTRUCT CO53 citations91
US4340466AJul 20, 1982
Process for hydrotreating heavy oils containing metals
CHIYODA CHEM ENG CONSTRUCT CO33 citations91
US4239515ADec 16, 1980
Gas-liquid contact reaction apparatus
CHIYODA CHEM ENG CONSTRUCT CO101 citations91
US6806296B2Oct 19, 2004
Process of producing liquid hydrocarbon oil or dimethyl ether from lower hydrocarbon gas containing carbon dioxide
CHIYODA CHEM ENG CONSTRUCT CO33 citations90
US6652819B2Nov 25, 2003
Production of high purity vanadium compound from vanadium-containing carbonaceous residues
CHIYODA CHEM ENG CONSTRUCT CO27 citations90
US5608169AMar 4, 1997
Device and method for testing the bearing capacity of piles
CHIYODA CHEM ENG CONSTRUCT CO66 citations90
US5402521AMar 28, 1995
Method for recognition of abnormal conditions using neural networks
CHIYODA CHEM ENG CONSTRUCT CO105 citations90
US5365740ANov 22, 1994
Refrigeration system for a natural gas liquefaction process
CHIYODA CHEM ENG CONSTRUCT CO58 citations90
US4562059ADec 31, 1985
Method of preparing alumina
CHIYODA CHEM ENG CONSTRUCT CO43 citations90
US4465518AAug 14, 1984
Process for strengthening soft soil
CHIYODA CHEM ENG CONSTRUCT CO36 citations90
US4166026AAug 28, 1979
Two-step hydrodesulfurization of heavy hydrocarbon oil
CHIYODA CHEM ENG CONSTRUCT CO46 citations90
US4152250AMay 1, 1979
Demetallation of hydrocarbons with catalysts supported on sepiolite
CHIYODA CHEM ENG CONSTRUCT CO41 citations90
US6616905B1Sep 9, 2003
Desulfurization of exhaust gases using activated carbon catalyst
CHIYODA CHEM ENG CONSTRUCT CO36 citations89
US5345000ASep 6, 1994
Process for the production of crystalline adduct of bisphenol A and phenol and apparatus therefor
CHIYODA CHEM ENG CONSTRUCT CO26 citations89
US4874483AOct 17, 1989
Process for the preparation of redox battery electrolyte and recovery of lead chloride
CHIYODA CHEM ENG CONSTRUCT CO89 citations89
US4555394ANov 26, 1985
Process for the preparation of alumina
CHIYODA CHEM ENG CONSTRUCT CO29 citations89
US4454038AJun 12, 1984
Apparatus for biological treatment of waste water in downflow operation
CHIYODA CHEM ENG CONSTRUCT CO42 citations89
US4256573AMar 17, 1981
Process for biological treatment of waste water in downflow operation
CHIYODA CHEM ENG CONSTRUCT CO41 citations89
US4233137ANov 11, 1980
Method of heat recovering from high temperature thermally cracked hydrocarbons
CHIYODA CHEM ENG CONSTRUCT CO51 citations89
Showing the top 50 of 121 patents by PatentIndex Score.