Inventor · disambiguated record
Yumi Nakagawa
Also filed as: NAKAGAWA YUMI
33 granted patents·4 pending applications·1,165 citations·filing 1992–2023
98Inventor score
Top patents by PatentIndex Score
37 records- 0199US5316753AZeolite SSZ-35CHEVRON RES & TECH·Filed 1992·Granted May 31, 1994·180 cites·22 claims
- 0298US5958370AZeolite SSZ-39CHEVRON USA INC·Filed 1997·Granted Sep 28, 1999·220 cites·40 claims
- 0392US5268161AProcess for preparing molecular sieves using a 1,3,3,8,8-pentamethyl-3-azoniabicyclo [3.2.1] octane templateCHEVRON RES & TECH·Filed 1992·Granted Dec 7, 1993·60 cites·20 claims
- 0485US5785947APreparation of zeolites using organic template and amineCHEVRON USA INC·Filed 1996·Granted Jul 28, 1998·85 cites·50 claims
- 0584US5225179AMethod of making molecular sievesCHEVRON RES & TECH·Filed 1992·Granted Jul 6, 1993·44 cites·19 claims
- 0681US5707601AProcess for preparing zeolites having MTT crystal structure using small, neutral aminesCHEVRON USA INC·Filed 1996·Granted Jan 13, 1998·47 cites·52 claims
- 0781US5340563APreparation of zeolites using low silica/alumina zeolites as a source of aluminumCHEVRON RES & TECH·Filed 1992·Granted Aug 23, 1994·45 cites·14 claims
- 0880US5254514AZeolite SSZ-37CHEVRON RES & TECH·Filed 1992·Granted Oct 19, 1993·40 cites·11 claims
- 0976US5271922AProcess for preparing molecular sieves using a sparteine templateCHEVRON RES & TECH·Filed 1992·Granted Dec 21, 1993·27 cites·16 claims
- 1074US5580540AZeolite SSZ-44CHEVRON USA INC·Filed 1995·Granted Dec 3, 1996·24 cites·12 claims
- 1174US5391287AHydrocarbon conversion process using zeolite SSZ-35CHEVRON RES & TECH·Filed 1993·Granted Feb 21, 1995·22 cites·22 claims
- 1273US6313913B1Surface inspection apparatus and methodNIKON CORP·Filed 1999·Granted Nov 6, 2001·39 cites·11 claims
- 1373US5645812AZeolite ZSM-11 and a process for preparing zeolite ZSM-11 using a 3,5-dimethylpiperidinium templating agentCHEVRON USA INC·Filed 1994·Granted Jul 8, 1997·29 cites·29 claims
- 1468US5641393AHigh-silica zeolite SSZ-37 and methods of making and using sameCHEVRON USA INC·Filed 1995·Granted Jun 24, 1997·30 cites·38 claims
- 1567US6086848AProcess for preparing zeolites using substituted-piperidinium cationsCHEVRON USA INC·Filed 1997·Granted Jul 11, 2000·27 cites·16 claims
- 1667US5965104AZeolite SSZ-43CHEVRON USA INC·Filed 1997·Granted Oct 12, 1999·26 cites·74 claims
- 1767US5939044AZeolite SSZ-36CHEVRON USA INC·Filed 1997·Granted Aug 17, 1999·26 cites·8 claims
- 1866US5281407AMethod for preparing crystalline materials using aza-polycyclic templating agentsCHEVRON RES & TECH·Filed 1992·Granted Jan 25, 1994·19 cites·66 claims
- 1965US5968474APure phase titanium-containing zeolite having MEL structure, process for preparing same, and oxidation processes using same as catalystCHEVRON USA INC·Filed 1997·Granted Oct 19, 1999·28 cites·10 claims
- 2065US5273736AProcess for preparing molecular sieves using 9-azabicyclo [3.3.1] nonane templatesCHEVRON RES & TECH·Filed 1992·Granted Dec 28, 1993·17 cites·20 claims
- 2164US6156290AZeolite SSZ-47CHEVRON USA INC·Filed 1997·Granted Dec 5, 2000·19 cites·9 claims
- 2264US2024375957A1Hexagonal boron nitride powder for fillerJFE MINERAL & ALLOY COMPANY LTD·Filed 2022·Application pending·0 cites
- 2363US5425933AMethod for preparing crystalline materials using heterobridged aza-polycyclic templating agentsCHEVRON RES & TECH·Filed 1994·Granted Jun 20, 1995·23 cites·32 claims
- 2462US6290922B1Zoelite SSZ-47CHEVRON USA INC·Filed 2000·Granted Sep 18, 2001·6 cites·4 claims
- 2560US6540903B2Hydrocarbon conversion with zeolite SSZ-47CHEVRON USA INC·Filed 2000·Granted Apr 1, 2003·2 cites·50 claims
- 2660US2025195346A1Hexagonal boron nitride powder for cosmetic use and cosmeticJFE MINERAL & ALLOY CO LTD·Filed 2023·Application pending·0 cites
- 2758US5271921AProcess for preparing molecular sieves using 3,7-diazabicyclo[3.3.1]CHEVRON RES & TECH·Filed 1992·Granted Dec 21, 1993·13 cites·20 claims
- 2857US6218591B1Zeolite SSZ-36CHEVRON USA INC·Filed 1999·Granted Apr 17, 2001·17 cites·44 claims
- 2956US6348183B2Zeolite SSZ-47CHEVRON USA INC·Filed 2000·Granted Feb 19, 2002·3 cites·6 claims
- 3056US5707600AProcess for preparing medium pore size zeolites using neutral aminesCHEVRON USA INC·Filed 1996·Granted Jan 13, 1998·16 cites·19 claims
- 3154US2021253425A1Hexagonal boron nitride powderMIZUSHIMA FERROALLOY CO LTD·Filed 2019·Application pending·0 cites
- 3249US6444191B1Zeolite ZSM-11 and a process for preparing zeolite ZSM-11 using a 3,5-dimethylpiperidinium templating agentCHEVRON USA INC·Filed 1999·Granted Sep 3, 2002·8 cites·8 claims
- 3344US5911968AMethod for making zeolite SSZ-44CHEVRON CHEM CO·Filed 1997·Granted Jun 15, 1999·6 cites·5 claims
- 3443US5683572AZeolite SSZ-44CHEVRON USA INC·Filed 1996·Granted Nov 4, 1997·5 cites·38 claims
- 3539US5856868AForeign substance inspecting apparatus and method thereofNIKON CORP·Filed 1997·Granted Jan 5, 1999·6 cites·17 claims
- 3639US5501848AMethod for preparing crystalline aluminophosphate materials using azapolycyclic templating agentsCHEVRON USA INC·Filed 1994·Granted Mar 26, 1996·6 cites·58 claims
- 3739US2016107133A1Made-to-order system and preparation system for cosmeticsHEISHIN LTD·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →