Inventor
ZAJACEK JOHN G
US48 patents
⚠️ This page may combine multiple inventors who share the name “ZAJACEK JOHN G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ARCO CHEM TECH
33 patentsUS5646314AJul 8, 1997
Process for titanium silicalite-catalyzed epoxidation
ARCO CHEM TECH71 citations96
US5374747ADec 20, 1994
Epoxidation process and catalyst therefore
ARCO CHEM TECH76 citations96
US5262550ANov 16, 1993
Epoxidation process using titanium-rich silicalite catalysts
ARCO CHEM TECH52 citations96
US5214168AMay 25, 1993
Integrated process for epoxide production
ARCO CHEM TECH95 citations96
US5688484ANov 18, 1997
Non-hydrothermal method of making a titanium-containing zeolite
ARCO CHEM TECH31 citations93
US5554356ASep 10, 1996
Method of making essentially silicic zeolite beta
ARCO CHEM TECH22 citations93
US5474754ADec 12, 1995
Preparation of an aluminosilicotitanate isomorphous with zeolite beta
ARCO CHEM TECH27 citations93
US5166372ANov 24, 1992
Epoxidation process
ARCO CHEM TECH54 citations93
US5741749AApr 21, 1998
Regeneration of a titanium-containing molecular sieve
ARCO CHEM TECH19 citations92
US5695736ADec 9, 1997
Tiatanium containing molecular sieve having a zelite beta structure
ARCO CHEM TECH29 citations92
US5681789AOct 28, 1997
Activation of as-synthesized titanium-containing zeolites
ARCO CHEM TECH35 citations92
US5523426AJun 4, 1996
Integrated process for epoxidation
ARCO CHEM TECH48 citations92
US5412122AMay 2, 1995
Epoxidation process
ARCO CHEM TECH48 citations92
US5384418AJan 24, 1995
Integrated process for epoxide production
ARCO CHEM TECH49 citations92
US5621122AApr 15, 1997
Epoxidation process
ARCO CHEM TECH23 citations91
US5463090AOct 31, 1995
Integrated process for epoxide production
ARCO CHEM TECH27 citations91
US6127584AOct 3, 2000
Butanediol production
ARCO CHEM TECH18 citations84
US5684170ANov 4, 1997
Epoxidation process
ARCO CHEM TECH15 citations82
US5753576AMay 19, 1998
Regeneration of a titanium-containing molecular sieve
ARCO CHEM TECH13 citations74
US5618512AApr 8, 1997
Niobium-containing zeolites
ARCO CHEM TECH8 citations74
US5599987AFeb 4, 1997
Integrated process for cyclohexanone oxime production
ARCO CHEM TECH16 citations74
US5508019AApr 16, 1996
Dealumination of aluminosilicates
ARCO CHEM TECH11 citations74
US5241118AAug 31, 1993
Process for the preparation of trisubstituted ureas by reductive carbonylation
ARCO CHEM TECH11 citations74
US5166371ANov 24, 1992
Asymmetric epoxidation using a chiral hydroperoxide
ARCO CHEM TECH6 citations74
US4996359AFeb 26, 1991
Process for the preparation of aromatic bis dialkyl ureas
ARCO CHEM TECH15 citations74
US5451701ASep 19, 1995
Integrated process for cyclohexanone oxime production
ARCO CHEM TECH11 citations73
US5527520AJun 18, 1996
Method of making a titanium-containing molecular sieve
ARCO CHEM TECH12 citations72
US5693834ADec 2, 1997
Integrated process for epoxidation
ARCO CHEM TECH2 citations63
US5679749AOct 21, 1997
Olefin epoxidation using niobium-containing zeolites
ARCO CHEM TECH4 citations63
US5581000ADec 3, 1996
Sulfonic acid-substituted anthrahydroquinone alkylammonium salts
ARCO CHEM TECH2 citations61
US5126476AJun 30, 1992
Process for the preparation of aryl-, heteroaryl-, or cycloalkyl-substituted alkyl urethanes and isocyanates
ARCO CHEM TECH1 citations52
US5663384ASep 2, 1997
Asymetric epoxidation using a titanium-containing zeolite and a chiral hydroperoxide
ARCO CHEM TECH1 citations51
US5540906AJul 30, 1996
Hydrogen peroxide process
ARCO CHEM TECH1 citations51
ATLANTIC RICHFIELD CO
14 patentsUS3962302AJun 8, 1976
Production of isocyanates from esters of carbamic acids (urethanes)
ATLANTIC RICHFIELD CO45 citations91
US4146727AMar 27, 1979
Process for the preparation of diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamates by the acid rearrangement of an (alkoxycarbonyl) phenylaminomethylphenyl compound
ATLANTIC RICHFIELD CO24 citations82
US3993685ANov 23, 1976
Process for the production of urethanes
ATLANTIC RICHFIELD CO29 citations81
US3956360AMay 11, 1976
Process for the manufacture of urethanes
ATLANTIC RICHFIELD CO20 citations80
US4130633ADec 19, 1978
Removal of selenium from urethane solutions
ATLANTIC RICHFIELD CO9 citations73
US4055630AOct 25, 1977
Process for the recovery of selenium from urethanes containing selenium or compounds thereof
ATLANTIC RICHFIELD CO15 citations73
US3936484AFeb 3, 1976
Production of isocyanates from substituted ureas
ATLANTIC RICHFIELD CO13 citations72
US3987115AOct 19, 1976
Production of hydroperoxides
ATLANTIC RICHFIELD CO7 citations69
US4041068AAug 9, 1977
Synthesis of oxalate esters by catalytic oxidative carbonylation of borate esters
ATLANTIC RICHFIELD CO4 citations63
US4041067AAug 9, 1977
Synthesis of oxalate esters by the oxidative carbonylation of amide acetals
ATLANTIC RICHFIELD CO2 citations63
US4038376AJul 26, 1977
Process for the recovery of selenium from urethanes containing selenium or compounds thereof
ATLANTIC RICHFIELD CO5 citations62
US4052454AOct 4, 1977
Process for the manufacture of ureas
ATLANTIC RICHFIELD CO5 citations61
US3983143ASep 28, 1976
Epoxidation of olefins with less stable organic hydroperoxides by using an alcohol stabilizing agent
ATLANTIC RICHFIELD CO6 citations57
US3989755ANov 2, 1976
Production of oximes by the reaction of carbon monoxide with nitrocompounds
ATLANTIC RICHFIELD CO0 citations40