Inventor
CHIBA AKIO
JP18 patents
⚠️ This page may combine multiple inventors who share the name “CHIBA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
10 patentsUS5208502AMay 4, 1993
Sliding current collector made of ceramics
HITACHI LTD73 citations95
US4497875AFeb 5, 1985
Ceramic substrate with metal plate
HITACHI LTD52 citations95
US4482912ANov 13, 1984
Stacked structure having matrix-fibered composite layers and a metal layer
HITACHI LTD62 citations95
US4690793ASep 1, 1987
Nuclear fusion reactor
HITACHI LTD35 citations91
US4122386AOct 24, 1978
Uniform magnetic field generating device
HITACHI LTD23 citations81
US5266860ANov 30, 1993
Commutator
HITACHI LTD10 citations74
US5200373AApr 6, 1993
High strength composite ceramic structure and process for producing the same
HITACHI LTD9 citations72
US4042898AAug 16, 1977
Pole piece for use in magnet device and method for manufacturing same
HITACHI LTD12 citations72
US6953761B2Oct 11, 2005
Aluminum nitride sintered body and substrate for electronic devices
HITACHI LTD5 citations62
US4217568AAug 12, 1980
Magnetic pole pieces for use in a nuclear magnetic resonance apparatus
HITACHI LTD5 citations61
NIHON DEMPA KOGYO CO
4 patentsUS7174620B2Feb 13, 2007
Method of manufacturing thin quartz crystal wafer
NIHON DEMPA KOGYO CO58 citations94
US7034441B2Apr 25, 2006
Surface mount crystal unit and surface mount crystal oscillator
NIHON DEMPA KOGYO CO33 citations92
US6930440B2Aug 16, 2005
Tuning fork type crystal unit and bar type crystal unit
NIHON DEMPA KOGYO CO4 citations60
US7863802B2Jan 4, 2011
Quartz crystal element made of double-rotation Y-cut quartz crystal plate
NIHON DEMPA KOGYO CO1 citations51