Inventor
OHWADA IWAO
JP59 patents
Patents
50 patentsUS6690344B1Feb 10, 2004
Method and apparatus for driving device and display
NGK INSULATORS LTD235 citations99
US5862275AJan 19, 1999
Display device
NGK INSULATORS LTD73 citations96
US7307383B2Dec 11, 2007
Electron emitter and method of producing the same
NGK INSULATORS LTD25 citations93
US6682318B2Jan 27, 2004
Pump
NGK INSULATORS LTD20 citations93
US6666658B2Dec 23, 2003
Microfluidic pump device
NGK INSULATORS LTD23 citations93
US6565331B1May 20, 2003
Pump
NGK INSULATORS LTD18 citations93
US6528925B1Mar 4, 2003
Piezoelectric/electrostrictive element driving circuit
NGK INSULATORS LTD20 citations93
US6483492B1Nov 19, 2002
Display-driving device and display-driving method performing gradation control based on a temporal modulation system
NGK INSULATORS LTD38 citations93
US6452583B1Sep 17, 2002
Display-driving device and display-driving method
NGK INSULATORS LTD47 citations93
US6323833B1Nov 27, 2001
Optical waveguide display with movable actuators which cause light leakage in waveguide at each display elements to provide gradation in a display image by temporal subfield modulation
NGK INSULATORS LTD30 citations93
US6281868B1Aug 28, 2001
Display
NGK INSULATORS LTD31 citations93
US6226080B1May 1, 2001
Method for detecting defect of transparent body, method for producing transparent body
NGK INSULATORS LTD41 citations93
US6211853B1Apr 3, 2001
Optical waveguide display with voltage-modulated controlled movable actuators which cause light leakage in waveguide at each display element to provide gradation in a display image
NGK INSULATORS LTD35 citations93
US6453100B1Sep 17, 2002
Display device and method for producing the same
NGK INSULATORS LTD21 citations89
US9431067B2Aug 30, 2016
Volatile memory backup system including all-solid-state battery
NGK INSULATORS LTD12 citations84
US7379037B2May 27, 2008
Display apparatus, method of driving display apparatus, electron emitter, method of driving electron emitter, apparatus for driving electron emitter, electron emission apparatus, and method of driving electron emission apparatus
NGK INSULATORS LTD10 citations84
US7187114B2Mar 6, 2007
Electron emitter comprising emitter section made of dielectric material
NGK INSULATORS LTD11 citations84
US7176609B2Feb 13, 2007
High emission low voltage electron emitter
NGK INSULATORS LTD13 citations84
US7071628B2Jul 4, 2006
Electronic pulse generation device
NGK INSULATORS LTD15 citations84
US6897620B1May 24, 2005
Electron emitter, drive circuit of electron emitter and method of driving electron emitter
NGK INSULATORS LTD14 citations84
US6434028B1Aug 13, 2002
DC to DC converter
NGK INSULATORS LTD17 citations84
US6975074B2Dec 13, 2005
Electron emitter comprising emitter section made of dielectric material
NGK INSULATORS LTD7 citations74
US6508411B1Jan 21, 2003
Method of driving liquid-drop spraying device
NGK INSULATORS LTD10 citations74
US6476336B1Nov 5, 2002
Current controlling element
NGK INSULATORS LTD12 citations74
US10581114B2Mar 3, 2020
Battery-equipped device
NGK INSULATORS LTD3 citations73
US7109962B2Sep 19, 2006
Display device
NGK INSULATORS LTD8 citations73
US6946800B2Sep 20, 2005
Electron emitter, method of driving electron emitter, display and method of driving display
NGK INSULATORS LTD10 citations72
US6936972B2Aug 30, 2005
Electron-emitting element and field emission display using the same
NGK INSULATORS LTD7 citations72
US11114595B2Sep 7, 2021
Optical component and transparent body
NGK INSULATORS LTD0 citations63
US11105486B2Aug 31, 2021
Optic and illumination device
NGK INSULATORS LTD0 citations63
US10950858B2Mar 16, 2021
IC power source, various IC products provided with same, method for supplying power to IC, and method for driving IC
NGK INSULATORS LTD0 citations63
US7528539B2May 5, 2009
Electron emitter and method of fabricating electron emitter
NGK INSULATORS LTD4 citations63
US7474060B2Jan 6, 2009
Light source
NGK INSULATORS LTD3 citations63
USRE40489ESep 9, 2008
Display-driving device and display-driving method performing gradation control based on a temporal modulation system
NGK INSULATORS LTD4 citations63
US7336026B2Feb 26, 2008
High efficiency dielectric electron emitter
NGK INSULATORS LTD4 citations63
US7288881B2Oct 30, 2007
Electron emitter and light emission element
NGK INSULATORS LTD5 citations63
US7230371B2Jun 12, 2007
Light source
NGK INSULATORS LTD6 citations63
US6702196B2Mar 9, 2004
Circuit for driving liquid drop spraying apparatus
NGK INSULATORS LTD2 citations63
US6549437B1Apr 15, 2003
Voltage converter
NGK INSULATORS LTD5 citations63
US6545421B1Apr 8, 2003
Current controlling element
NGK INSULATORS LTD4 citations63
US6366152B1Apr 2, 2002
Vector-signal processing circuit
NGK INSULATORS LTD2 citations63
US11387454B2Jul 12, 2022
Secondary battery
NGK INSULATORS LTD0 citations62
US11112086B2Sep 7, 2021
Phosphor element and lighting device
NGK INSULATORS LTD0 citations62
US10995934B2May 4, 2021
Optical component including a translucent substrate for adjustable light scattering and lighting device including the same
NGK INSULATORS LTD0 citations62
US7006061B2Feb 28, 2006
Display device
NGK INSULATORS LTD2 citations62
US7088049B2Aug 8, 2006
Electron-emitting device and field emission display using the same
NGK INSULATORS LTD2 citations61
US6753998B2Jun 22, 2004
Optical system of display
NGK INSULATORS LTD2 citations61
US7304440B2Dec 4, 2007
Electron-emitting apparatus
NGK INSULATORS LTD3 citations58
US12278317B2Apr 15, 2025
Transparent sealing member and optical component
NGK INSULATORS LTD0 citations52
US9685680B2Jun 20, 2017
Method of using all-solid-state battery
NGK INSULATORS LTD0 citations52
Showing the top 50 of 59 patents by PatentIndex Score.