Inventor
IWASA SEIICHI
JP36 patents
⚠️ This page may combine multiple inventors who share the name “IWASA SEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
20 patentsUS5383138AJan 17, 1995
Folding portable data processing apparatus with three hinge points
FUJITSU LTD204 citations98
US6103979AAug 15, 2000
Keyboard having plurality of keys therein, each key establishing different electric contacts
FUJITSU LTD146 citations97
US6456263B1Sep 24, 2002
Method for driving a gas electric discharge device
FUJITSU LTD73 citations96
US5434566AJul 18, 1995
Key touch adjusting method and device
FUJITSU LTD84 citations96
US5327411AJul 5, 1994
Write control method and apparatus for writing optical disk data
FUJITSU LTD73 citations96
US6937213B2Aug 30, 2005
Method and device for driving plasma display panel
FUJITSU LTD20 citations93
US6982685B2Jan 3, 2006
Method for driving a gas electric discharge device
FUJITSU LTD14 citations92
US5977938ANov 2, 1999
Apparatus and method for inputting and outputting by using aerial image
FUJITSU LTD22 citations92
US5152392AOct 6, 1992
Push switch with improved actuator assembly
FUJITSU LTD50 citations92
US6680718B2Jan 20, 2004
Method for driving a gas-discharge panel
FUJITSU LTD9 citations82
US7023405B2Apr 4, 2006
Method and device for driving plasma display panel
FUJITSU LTD7 citations74
US5818357AOct 6, 1998
Chair with a supplemental keyboard and a keyboard system
FUJITSU LTD13 citations74
US5560724AOct 1, 1996
Keyboard having improved keytop
FUJITSU LTD11 citations74
US5486059AJan 23, 1996
Keyboard having improved keytop
FUJITSU LTD5 citations74
US4592052AMay 27, 1986
Method of testing bubble memory devices
FUJITSU LTD2 citations63
US4568618AFeb 4, 1986
Magnetic bubble memory chip
FUJITSU LTD3 citations62
US4731751AMar 15, 1988
Magnetic bubble memory device
FUJITSU LTD0 citations52
US4259727AMar 31, 1981
Magnetic bubble memory device
FUJITSU LTD1 citations48
US4590587AMay 20, 1986
Magnetic bubble memory device
FUJITSU LTD0 citations45
US4459549AJul 10, 1984
Method and apparatus for testing magnetic bubble devices by varying the components of input signals
FUJITSU LTD1 citations45
HITACHI HPPL
8 patentsUS7817113B2Oct 19, 2010
Method for driving a gas electric discharge device
HITACHI HPPL8 citations84
USRE41872EOct 26, 2010
Method for driving a gas-discharge panel
HITACHI HPPL6 citations74
USRE41832EOct 19, 2010
Method for driving a gas-discharge panel
HITACHI HPPL6 citations74
USRE41817EOct 12, 2010
Method for driving a gas-discharge panel
HITACHI HPPL6 citations74
US7719487B2May 18, 2010
Method for driving a gas electric discharge device
HITACHI HPPL3 citations63
USRE44003EFeb 19, 2013
Method for driving a gas-discharge panel
HITACHI HPPL0 citations52
US7965261B2Jun 21, 2011
Method for driving a gas electric discharge device
HITACHI HPPL0 citations52
US7675484B2Mar 9, 2010
Method for driving a gas electric discharge device
HITACHI HPPL0 citations52
HASHIMOTO YASUNOBU
5 patentsUSRE43267EMar 27, 2012
Method for driving a gas-discharge panel
HASHIMOTO YASUNOBU3 citations73
USRE45167ESep 30, 2014
Method for driving a gas-discharge panel
HASHIMOTO YASUNOBU0 citations51
USRE44757EFeb 11, 2014
Method for driving a gas-discharge panel
HASHIMOTO YASUNOBU0 citations51
USRE43269EMar 27, 2012
Method for driving a gas-discharge panel
HASHIMOTO YASUNOBU0 citations51
USRE43268EMar 27, 2012
Method for driving a gas-discharge panel
HASHIMOTO YASUNOBU0 citations51