Inventor
TSUKADA KEIJI
JP45 patents
⚠️ This page may combine multiple inventors who share the name “TSUKADA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
33 patentsUS5132012AJul 21, 1992
Liquid chromatograph
HITACHI LTD201 citations99
US6665553B2Dec 16, 2003
Biomagnetic field measuring apparatus using squid magnetometers for evaluating a rotational property of a current in a subject
HITACHI LTD79 citations98
US6522908B1Feb 18, 2003
Biomagnetic field measuring apparatus
HITACHI LTD85 citations98
US6269262B1Jul 31, 2001
Biomagnetic field measuring apparatus
HITACHI LTD89 citations97
US6815949B2Nov 9, 2004
Apparatus for measuring a magnetic field
HITACHI LTD60 citations96
US6230037B1May 8, 2001
Biomagnetic field measuring method and apparatus
HITACHI LTD61 citations96
US7403809B2Jul 22, 2008
Biomagnetic field measuring method and apparatus
HITACHI LTD19 citations92
US6853185B2Feb 8, 2005
Magnetic field measurement system
HITACHI LTD27 citations92
US6735460B2May 11, 2004
Biomagnetic field measuring method and apparatus
HITACHI LTD20 citations92
US6711281B2Mar 23, 2004
Method of measuring a biomagnetic field, method of analyzing a measured biomagnetic field, and method of displaying biomagnetic field data, and apparatus therefor
HITACHI LTD23 citations92
US6681131B2Jan 20, 2004
Apparatus for measuring bio-magnetic fields
HITACHI LTD36 citations92
US6628978B1Sep 30, 2003
Biomagnetism measurement device and method of biomagnetism measurement using the device
HITACHI LTD28 citations92
US6539245B2Mar 25, 2003
Biomagnetic field measuring method and apparatus
HITACHI LTD23 citations92
US6473518B1Oct 29, 2002
Method of measuring a biomagnetic field, method of analyzing a measured biomagnetic field, method of displaying biomagnetic field data, and apparatus therefor
HITACHI LTD24 citations92
US6462540B1Oct 8, 2002
Magnetic field measuring apparatus which enables external magnetic noise cancellation
HITACHI LTD37 citations92
US6424853B1Jul 23, 2002
Magnetic field measurement apparatus
HITACHI LTD27 citations92
US6336043B1Jan 1, 2002
Method for processing biomagnetic field data, magnetic field contour mapping, forming their waveforms and a biomagnetic instrument using the same
HITACHI LTD16 citations92
US6275719B1Aug 14, 2001
Biomagnetic field measurement apparatus
HITACHI LTD34 citations92
US5352352AOct 4, 1994
Carbonic acid gas sensor
HITACHI LTD26 citations92
US5344545ASep 6, 1994
Electrolytic sensor for measuring the content of gas in a fluid
HITACHI LTD38 citations92
US5250168AOct 5, 1993
Integrated ion sensor
HITACHI LTD36 citations92
US5102525AApr 7, 1992
Planar oxygen sensor
HITACHI LTD27 citations92
US6745063B2Jun 1, 2004
Biomagnetic field measuring apparatus
HITACHI LTD13 citations84
US6665552B2Dec 16, 2003
Gradiometer integrating pickup coils and magnetic field measurement system
HITACHI LTD17 citations84
US7194121B2Mar 20, 2007
Method of measuring a biomagnetic field, method of analyzing a measured biomagnetic field, method of displaying biomagnetic field data, and an apparatus therefor
HITACHI LTD5 citations74
US6842637B2Jan 11, 2005
Magnetic field measurement apparatus
HITACHI LTD9 citations74
US6528994B2Mar 4, 2003
Magnetic field measurement apparatus
HITACHI LTD12 citations74
US6609019B1Aug 19, 2003
Physiological magnetic field measuring instrument for measuring magnetic field at plural positions of living body
HITACHI LTD8 citations73
US7455648B2Nov 25, 2008
Living body inspection apparatus
HITACHI LTD3 citations63
US7433506B2Oct 7, 2008
Method of measuring a biomagnetic field, method of analyzing a measured biomagnetic field, method of displaying biomagnetic field data, and an apparatus therefor
HITACHI LTD1 citations63
US6961605B2Nov 1, 2005
Method for processing biomagnetic field data, magnetic field contour mapping, forming their waveforms and a biomagnetic instrument using the same
HITACHI LTD3 citations63
US7432705B2Oct 7, 2008
Magnetic shields and instruments for measuring biomagnetic fields
HITACHI LTD4 citations62
US7798981B2Sep 21, 2010
Living body inspection apparatus
HITACHI LTD0 citations52
HITACHI HIGH TECH CORP
4 patentsUS7400984B2Jul 15, 2008
Biomagnetic measurement apparatus
HITACHI HIGH TECH CORP13 citations84
US7363070B2Apr 22, 2008
Biomagnetic measurement apparatus
HITACHI HIGH TECH CORP11 citations84
US7340289B2Mar 4, 2008
Biomagnetic field measuring apparatus
HITACHI HIGH TECH CORP16 citations84
US7193413B2Mar 20, 2007
Magnetic field measurement apparatus
HITACHI HIGH TECH CORP18 citations84