Inventor
OKAJIMA HISAKAZU
JP14 patents
⚠️ This page may combine multiple inventors who share the name “OKAJIMA HISAKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK INSULATORS LTD
13 patentsUS7279661B2Oct 9, 2007
Heating apparatus
NGK INSULATORS LTD53 citations92
US7173219B2Feb 6, 2007
Ceramic heaters
NGK INSULATORS LTD20 citations92
US6875960B2Apr 5, 2005
Heating system
NGK INSULATORS LTD28 citations92
US7274006B2Sep 25, 2007
Heater
NGK INSULATORS LTD16 citations84
US5202629AApr 13, 1993
Optical magnetic-field sensor having an integrally bonded magnetooptical element, polarizer, analyzer and substrate
NGK INSULATORS LTD20 citations82
US5446381AAug 29, 1995
Optical voltage electric field sensor
NGK INSULATORS LTD8 citations73
US5382901AJan 17, 1995
Optical magnetic field sensor capable of precise measurement without temperature induced errors
NGK INSULATORS LTD13 citations73
US5187762AFeb 16, 1993
Optical ferrule
NGK INSULATORS LTD12 citations73
US5136680AAug 4, 1992
Optical fiber built-in type composite insulator and method for producing the same
NGK INSULATORS LTD13 citations73
US5069525ADec 3, 1991
Optical fiber built-in type composite insulator and method of producing the same
NGK INSULATORS LTD9 citations73
US5355084AOct 11, 1994
Optical magnetic-field sensor having spherical lenses for light collimation
NGK INSULATORS LTD12 citations72
US7544916B2Jun 9, 2009
Heating device
NGK INSULATORS LTD4 citations62
US7247817B2Jul 24, 2007
Ceramic heater having a resistance heater element
NGK INSULATORS LTD1 citations51