Inventor
SHIGA SADAKAZU
JP16 patents
⚠️ This page may combine multiple inventors who share the name “SHIGA SADAKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ELECTRIC CO LTD
14 patentsUS6625738B1Sep 23, 2003
USB apparatus that turns on computer power supply using signals substantially longer than information conveying pulse widths when predetermined operation is performed on input device
ALPS ELECTRIC CO LTD32 citations92
US6522283B1Feb 18, 2003
Wireless keyboard
ALPS ELECTRIC CO LTD24 citations92
US6072472AJun 6, 2000
Keyboard with power saving function and data storage capabilities
ALPS ELECTRIC CO LTD33 citations92
US5448236ASep 5, 1995
N-key rollover circuit
ALPS ELECTRIC CO LTD27 citations92
US5877749AMar 2, 1999
Operation inputting apparatus
ALPS ELECTRIC CO LTD33 citations90
US6963984B2Nov 8, 2005
Computer power supply startup apparatus
ALPS ELECTRIC CO LTD19 citations83
US6144369ANov 7, 2000
Signal processing system
ALPS ELECTRIC CO LTD10 citations73
US5859599AJan 12, 1999
Keyboard
ALPS ELECTRIC CO LTD16 citations73
US4922248AMay 1, 1990
Key output method for keyboards
ALPS ELECTRIC CO LTD13 citations73
US5680154AOct 21, 1997
Operation inputting apparatus
ALPS ELECTRIC CO LTD12 citations71
US6847031B2Jan 25, 2005
Intermittent operating type pointing device
ALPS ELECTRIC CO LTD5 citations62
US6201605B1Mar 13, 2001
Optical detecting apparatus and coordinate inputting apparatus using the detecting apparatus
ALPS ELECTRIC CO LTD5 citations62
US5907718AMay 25, 1999
Signal processing system for transmission of data between a keyboard and a signal processing unit
ALPS ELECTRIC CO LTD2 citations62
US5570110AOct 29, 1996
Operational input apparatus
ALPS ELECTRIC CO LTD4 citations60