Inventor
OKAMOTO AKIHIKO
JP37 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
14 patentsUS6329035B1Dec 11, 2001
Optical data storage medium capable of reversibly displaying information
RICOH KK119 citations97
US6660452B2Dec 9, 2003
Optical information memory medium and display recording method using the same
RICOH KK21 citations92
US6198712B1Mar 6, 2001
Disk apparatus including an inner cover and an outer cover with latching portions
RICOH KK22 citations92
US6137760AOct 24, 2000
Information recording and reproducing apparatus
RICOH KK18 citations92
US5912870AJun 15, 1999
Disk drive unit having improved shutter mechanism
RICOH KK27 citations92
US5787063AJul 28, 1998
Disk drive unit having improved shutter mechanism
RICOH KK21 citations92
US5351228ASep 27, 1994
Optical disk drive unit
RICOH KK43 citations92
US5070494ADec 3, 1991
Optical pickup device with dual-mode drive mechanism
RICOH KK38 citations90
US5301179AApr 5, 1994
Optical disk drive unit with a sealing type bearing member
RICOH KK17 citations74
US7359578B2Apr 15, 2008
Information processing apparatus, and program, computer readable medium, and method for searching for image data
RICOH KK2 citations63
US6898797B1May 24, 2005
Optical disc cartridge which protects a disc therein from ambient light
RICOH KK4 citations63
USRE37093EMar 13, 2001
Optical disk drive unit with a sealing type bearing member
RICOH KK6 citations63
US6967913B2Nov 22, 2005
Information processing method for achieving optimization of recording velocity
RICOH KK3 citations60
US6877075B2Apr 5, 2005
Information processor, information processing method and information processing program and recording medium
RICOH KK0 citations42
NEC CORP
13 patentsUS5850120ADec 15, 1998
Electron gun with a gamma correct field emission cathode
NEC CORP77 citations96
US5877594AMar 2, 1999
Electron beam apparatus having an electron lens and a structure for compensating for a spherical aberration of the electron lens
NEC CORP70 citations94
US7161285B2Jan 9, 2007
CNT film and field-emission cold cathode comprising the same
NEC CORP26 citations92
US6153978ANov 28, 2000
Field emission cold cathode device and method for driving the same
NEC CORP50 citations92
US5977696ANov 2, 1999
Field emission electron gun capable of minimizing nonuniform influence of surrounding electric potential condition on electrons emitted from emitters
NEC CORP22 citations92
US6780075B2Aug 24, 2004
Method of fabricating nano-tube, method of manufacturing field-emission type cold cathode, and method of manufacturing display device
NEC CORP34 citations89
US5786657AJul 28, 1998
Field emission electron gun capable of minimizing nonuniform influence of surrounding electric potential condition on electrons emitted from emitters
NEC CORP7 citations74
US5557160ASep 17, 1996
Field emission cathode including cylindrically shaped resistive connector and method of manufacturing
NEC CORP12 citations74
US4948751AAug 14, 1990
Moelcular beam epitaxy for selective epitaxial growth of III - V compound semiconductor
NEC CORP16 citations74
US6404138B1Jun 11, 2002
Cold cathode display device and driving method
NEC CORP2 citations63
US6404113B1Jun 11, 2002
Field emission type cold cathode element, method of fabricating the same, and display device
NEC CORP6 citations63
US6307309B1Oct 23, 2001
Field emission cold cathode device and manufacturing method thereof
NEC CORP6 citations63
US6060823AMay 9, 2000
Field emission cold cathode element
NEC CORP6 citations61