Inventor
NAKAGAWA YUMI
US33 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAWA YUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHEVRON USA INC
19 patentsUS5958370ASep 28, 1999
Zeolite SSZ-39
CHEVRON USA INC220 citations98
US5785947AJul 28, 1998
Preparation of zeolites using organic template and amine
CHEVRON USA INC85 citations96
US6156290ADec 5, 2000
Zeolite SSZ-47
CHEVRON USA INC19 citations93
US6086848AJul 11, 2000
Process for preparing zeolites using substituted-piperidinium cations
CHEVRON USA INC27 citations93
US6218591B1Apr 17, 2001
Zeolite SSZ-36
CHEVRON USA INC17 citations92
US5939044AAug 17, 1999
Zeolite SSZ-36
CHEVRON USA INC26 citations92
US5707601AJan 13, 1998
Process for preparing zeolites having MTT crystal structure using small, neutral amines
CHEVRON USA INC47 citations92
US5645812AJul 8, 1997
Zeolite ZSM-11 and a process for preparing zeolite ZSM-11 using a 3,5-dimethylpiperidinium templating agent
CHEVRON USA INC29 citations92
US5641393AJun 24, 1997
High-silica zeolite SSZ-37 and methods of making and using same
CHEVRON USA INC30 citations92
US5580540ADec 3, 1996
Zeolite SSZ-44
CHEVRON USA INC24 citations92
US5965104AOct 12, 1999
Zeolite SSZ-43
CHEVRON USA INC26 citations89
US5968474AOct 19, 1999
Pure phase titanium-containing zeolite having MEL structure, process for preparing same, and oxidation processes using same as catalyst
CHEVRON USA INC28 citations86
US6444191B1Sep 3, 2002
Zeolite ZSM-11 and a process for preparing zeolite ZSM-11 using a 3,5-dimethylpiperidinium templating agent
CHEVRON USA INC8 citations74
US6290922B1Sep 18, 2001
Zoelite SSZ-47
CHEVRON USA INC6 citations74
US5707600AJan 13, 1998
Process for preparing medium pore size zeolites using neutral amines
CHEVRON USA INC16 citations74
US5683572ANov 4, 1997
Zeolite SSZ-44
CHEVRON USA INC5 citations74
US6540903B2Apr 1, 2003
Hydrocarbon conversion with zeolite SSZ-47
CHEVRON USA INC2 citations63
US6348183B2Feb 19, 2002
Zeolite SSZ-47
CHEVRON USA INC3 citations63
US5501848AMar 26, 1996
Method for preparing crystalline aluminophosphate materials using azapolycyclic templating agents
CHEVRON USA INC6 citations63
CHEVRON RES & TECH
11 patentsUS5316753AMay 31, 1994
Zeolite SSZ-35
CHEVRON RES & TECH180 citations99
US5268161ADec 7, 1993
Process for preparing molecular sieves using a 1,3,3,8,8-pentamethyl-3-azoniabicyclo [3.2.1] octane template
CHEVRON RES & TECH60 citations96
US5340563AAug 23, 1994
Preparation of zeolites using low silica/alumina zeolites as a source of aluminum
CHEVRON RES & TECH45 citations93
US5225179AJul 6, 1993
Method of making molecular sieves
CHEVRON RES & TECH44 citations93
US5425933AJun 20, 1995
Method for preparing crystalline materials using heterobridged aza-polycyclic templating agents
CHEVRON RES & TECH23 citations92
US5391287AFeb 21, 1995
Hydrocarbon conversion process using zeolite SSZ-35
CHEVRON RES & TECH22 citations92
US5271922ADec 21, 1993
Process for preparing molecular sieves using a sparteine template
CHEVRON RES & TECH27 citations92
US5254514AOct 19, 1993
Zeolite SSZ-37
CHEVRON RES & TECH40 citations92
US5281407AJan 25, 1994
Method for preparing crystalline materials using aza-polycyclic templating agents
CHEVRON RES & TECH19 citations74
US5273736ADec 28, 1993
Process for preparing molecular sieves using 9-azabicyclo [3.3.1] nonane templates
CHEVRON RES & TECH17 citations74
US5271921ADec 21, 1993
Process for preparing molecular sieves using 3,7-diazabicyclo[3.3.1]
CHEVRON RES & TECH13 citations74