Inventor
YAMADA MASUYOSHI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA MASUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
21 patentsUS6295860B1Oct 2, 2001
Explosive detection system and sample collecting device
HITACHI LTD146 citations99
US6840120B2Jan 11, 2005
Explosive detection system and sample collecting device
HITACHI LTD49 citations96
US6852970B2Feb 8, 2005
Mass spectrometer
HITACHI LTD24 citations92
US6686592B1Feb 3, 2004
Mass spectrometer, mass spectrometry, and monitoring system
HITACHI LTD41 citations92
US6571649B2Jun 3, 2003
Explosive detection system and sample collecting device
HITACHI LTD23 citations92
US7064320B2Jun 20, 2006
Mass chromatograph
HITACHI LTD23 citations88
US6677582B2Jan 13, 2004
Ion source and mass spectrometer
HITACHI LTD14 citations84
US6639215B2Oct 28, 2003
Ion source and mass spectrometer
HITACHI LTD14 citations84
US6580067B1Jun 17, 2003
Sample analyzing monitor and combustion control system using the same
HITACHI LTD17 citations84
US10436807B2Oct 8, 2019
Authentication system and authentication method for detecting breath alcohol
HITACHI LTD2 citations73
USD809409SFeb 6, 2018
Breath alcohol content analyzer
HITACHI LTD2 citations73
US7882754B2Feb 8, 2011
Gas component collector, gas component collecting device, filter producing method, and gas component analyzing apparatus
HITACHI LTD4 citations63
US7375316B2May 20, 2008
Mass spectrometer and mass spectrometry
HITACHI LTD2 citations63
US6838664B2Jan 4, 2005
Mass spectrometer, mass spectrometry, and monitoring system
HITACHI LTD3 citations63
US11371950B2Jun 28, 2022
Moisture detection element, exhaled gas detector, exhalation test system, and manufacturing method of exhalation detection element
HITACHI LTD0 citations62
US11226329B2Jan 18, 2022
Exhaled gas detector and exhaled gas detection method
HITACHI LTD1 citations62
US11315359B2Apr 26, 2022
Biological-information detecting device and biological-information detecting method
HITACHI LTD0 citations52
US10942169B2Mar 9, 2021
Moisture detection element, exhaled gas detection device, exhaled air inspection system, and dew condensation removal method
HITACHI LTD0 citations52
US10883949B2Jan 5, 2021
Moisture detection element, gas detection device, and breath inspection system
HITACHI LTD0 citations52
US7420180B2Sep 2, 2008
Mass spectrometer and mass spectrometry
HITACHI LTD1 citations52
US10859524B2Dec 8, 2020
Humidity sensing element and hygrometer
HITACHI LTD0 citations41
HITACHI HIGH TECH CORP
4 patentsUS8368013B2Feb 5, 2013
Analyzer, ionization apparatus and analyzing method
HITACHI HIGH TECH CORP12 citations83
US8803084B2Aug 12, 2014
Mass spectrometer and mass spectrometry
HITACHI HIGH TECH CORP5 citations72
US9171704B2Oct 27, 2015
Mass spectrometer
HITACHI HIGH TECH CORP1 citations52
US9105453B2Aug 11, 2015
Mass spectrometer and mass spectrometry
HITACHI HIGH TECH CORP1 citations52