Inventor
HIRAYAMA TAKESHI
JP42 patents
⚠️ This page may combine multiple inventors who share the name “HIRAYAMA TAKESHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
19 patentsUS5896418AApr 20, 1999
Data transmission system having a communication control computer for controlling communication between a communication interface module and terminal devices
HITACHI LTD79 citations96
US5438506AAug 1, 1995
Collective wiring system and method of control thereof
HITACHI LTD39 citations96
US5113410AMay 12, 1992
Data transmission system
HITACHI LTD24 citations92
US4855896AAug 8, 1989
Collective wiring system and method of control thereof
HITACHI LTD29 citations92
US4554461ANov 19, 1985
Information transmitting apparatus
HITACHI LTD28 citations92
US4580126AApr 1, 1986
Method of testing analog/digital converter and structure of analog/digital converter suited for the test
HITACHI LTD23 citations82
US5224124AJun 29, 1993
Data transmission system
HITACHI LTD14 citations74
US4969082ANov 6, 1990
Control method for a collective wiring system
HITACHI LTD8 citations74
US4837698AJun 6, 1989
Method of controlling air-fuel ratio
HITACHI LTD8 citations74
US4703430AOct 27, 1987
Method controlling air-fuel ratio
HITACHI LTD14 citations74
US4604620AAug 5, 1986
Information transmission system
HITACHI LTD7 citations74
US4501249AFeb 26, 1985
Fuel injection control apparatus for internal combustion engine
HITACHI LTD13 citations74
US4455980AJun 26, 1984
Engine combustion control method
HITACHI LTD17 citations74
US4428051AJan 24, 1984
Electronic control apparatus for internal combustion engine
HITACHI LTD7 citations74
US4178554ADec 11, 1979
Phase difference detector
HITACHI LTD13 citations73
US4566069AJan 21, 1986
Electronic control apparatus for an internal combustion engine
HITACHI LTD18 citations71
US4771282ASep 13, 1988
Terminal for data transmission system
HITACHI LTD3 citations63
US4522178AJun 11, 1985
Method of fuel control in engine
HITACHI LTD2 citations63
US4561056ADec 24, 1985
Electronic control apparatus for internal combustion engine
HITACHI LTD5 citations62
KYOCERA CORP
14 patentsUS9883289B2Jan 30, 2018
Acoustic generator, acoustic generation device, and electronic device
KYOCERA CORP2 citations72
US9392375B2Jul 12, 2016
Acoustic generator, acoustic generation device, and electronic device
KYOCERA CORP3 citations72
US9398378B2Jul 19, 2016
Acoustic generator, acoustic generating apparatus, and electronic apparatus
KYOCERA CORP2 citations61
US12376496B2Jul 29, 2025
Piezoelectric ceramic composition and piezoelectric actuator
KYOCERA CORP0 citations56
US9392373B2Jul 12, 2016
Acoustic generator, acoustic generation device, and electronic device
KYOCERA CORP0 citations52
US9497550B2Nov 15, 2016
Vibration device, sound generator, speaker system, and electronic device
KYOCERA CORP0 citations51
US9392372B2Jul 12, 2016
Acoustic generator, acoustic generation device, and electronic device
KYOCERA CORP0 citations51
US9241205B2Jan 19, 2016
Vibration device, sound generator, speaker system, and electronic device
KYOCERA CORP1 citations51
US9154885B2Oct 6, 2015
Sound generator, sound generation device, and electronic apparatus
KYOCERA CORP0 citations51
US9392374B2Jul 12, 2016
Acoustic generator, acoustic generation device, and electronic device
KYOCERA CORP0 citations48
US12097703B2Sep 24, 2024
Piezoelectric actuator, liquid discharge head, and recording device
KYOCERA CORP0 citations47
US12319060B2Jun 3, 2025
Liquid ejection head and recording apparatus
KYOCERA CORP0 citations46
US12232423B2Feb 18, 2025
Piezoelectric ceramic composition
KYOCERA CORP0 citations45
US9402136B2Jul 26, 2016
Sound generator and electronic apparatus using the same
KYOCERA CORP0 citations38