Inventor · disambiguated record
Masamitsu Ishitobi
Also filed as: ISHITOBI MASAMITSU
7 granted patents·7 pending applications·124 citations·filing 1995–2023
86Inventor score
Top patents by PatentIndex Score
14 records- 0188US6849202B2Compound having phenylacetylene structure, liquid crystal composition, polymer, optically anisotropic product, optical or liquid crystal element, dibenzothiophene compound, intermediate, and process for producing the sameSUMITOMO CHEMICAL CO·Filed 2002·Granted Feb 1, 2005·15 cites·7 claims
- 0287US5759709APolymeric fluorescent substance and organic electroluminescence deviceSUMITOMO CHEMICAL CO·Filed 1995·Granted Jun 2, 1998·46 cites·8 claims
- 0376US7135579B2Dibenzothiophene oxide compound, and process for producing the sameSUMITOMO CHEMICAL CO·Filed 2004·Granted Nov 14, 2006·5 cites·9 claims
- 0473US9011994B2Gas-barrier multilayer filmHASEGAWA AKIRA·Filed 2010·Granted Apr 21, 2015·3 cites·29 claims
- 0569US6403237B1Polymeric fluorescent substance and organic electroluminescence deviceSUMITOMO CHEMICAL CO·Filed 1999·Granted Jun 11, 2002·31 cites·10 claims
- 0658US6994921B2Polymeric fluorescent substance and polymer light emitting deviceSUMITOMO CHEMICAL CO·Filed 2001·Granted Feb 7, 2006·4 cites·6 claims
- 0756US2008139824A1Dibenzothiophene oxide compound, and process for producing the sameSEKINE CHIZU·Filed 2007·Application pending·0 cites
- 0855US2025261501A1Light emitting element and method for producing the same, light emitting compound and method for producing the same, composition and method for producing the sameSUMITOMO CHEMICAL CO·Filed 2023·Application pending·0 cites
- 0949US2010179774A1Method for evaluating durability of unit cell, device for evaluating durability, program for evaluating durability, and unit cell of fuel cellSUMITOMO CHEMICAL CO·Filed 2007·Application pending·0 cites
- 1047US2009325026A1Polymer electrolyte membrane and producing method thereof, membrane-electrode assembly and fuel cell using the polymer electrolyte membrane, and evaluation ion method of ionic conductivity of the polymer electrolyte membraneSUMITOMO CHEMICAL CO·Filed 2007·Application pending·0 cites
- 1147US2010136459A1Electrolyte containing oxocarbon molecule and use thereofSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 1244US2011311899A1Polymer, polyarylene block copolymer, polyelectrolyte, polyelectrolyte membrane, and fuel cellONODERA TORU·Filed 2009·Application pending·0 cites
- 1341US5980781APolymeric fluorescent substance and organic electroluminescence deviceSUMITOMO CHEMICAL CO·Filed 1998·Granted Nov 9, 1999·20 cites·16 claims
- 1440US2007091437A1Reflective polarizer, laminated optical member, and liquid crystal display apparatusSUMITOMO CHEMICAL CO·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →