Inventor
NISHIDA KAZUFUMI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “NISHIDA KAZUFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
13 patentsUS6660419B1Dec 9, 2003
Solid polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations96
US6372373B1Apr 16, 2002
Solid polymer electrolyte fuel cell and method for producing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations96
US6893765B1May 17, 2005
Polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations93
US6689504B1Feb 10, 2004
Fuel cell stack with separator of a laminate structure
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations93
US6531236B1Mar 11, 2003
Polymer electrolyte fuel cell stack
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD41 citations93
US6329093B1Dec 11, 2001
Polymer electrolyte fuel cell stack
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD39 citations93
US6187464B1Feb 13, 2001
Method for activating fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD46 citations93
US7005205B1Feb 28, 2006
Polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD27 citations92
US6746793B1Jun 8, 2004
Polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32 citations92
US6660424B1Dec 9, 2003
Fuel cell and method of manufacture thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations92
US6210823B1Apr 3, 2001
Polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92
US7318974B2Jan 15, 2008
Polymer electrolyte fuel cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations84
US6869719B2Mar 22, 2005
Polymer electrolyte fuel cell stack
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
YOKOGAWA ELECTRIC CORP
7 patentsUS9488468B2Nov 8, 2016
Displacement sensor, spectral characteristic measuring apparatus, color measuring apparatus, planar measured object quality monitoring apparatus, displacement measuring method, spectral characteristic measuring method, and color measuring method
YOKOGAWA ELECTRIC CORP30 citations91
US12529825B2Jan 20, 2026
Integrating sphere
YOKOGAWA ELECTRIC CORP0 citations59
US10982949B2Apr 20, 2021
Measurement apparatus, measurement method, and computer readable medium
YOKOGAWA ELECTRIC CORP0 citations50
US9605949B2Mar 28, 2017
Displacement sensor, spectral characteristic measuring apparatus, color measuring apparatus, planar measured object quality monitoring apparatus, displacement measuring method, spectral characteristic measuring method, and color measuring method
YOKOGAWA ELECTRIC CORP0 citations49
US10345231B2Jul 9, 2019
Signal detection device and optical characteristics measurement device
YOKOGAWA ELECTRIC CORP0 citations48
US10634489B2Apr 28, 2020
Displacement sensor
YOKOGAWA ELECTRIC CORP0 citations36
US7646489B2Jan 12, 2010
Apparatus and method for measuring film thickness
YOKOGAWA ELECTRIC CORP0 citations33