Inventor
NARUSAWA TSUYOSHI
JP14 patents
Patents
14 patentsUS6624369B2Sep 23, 2003
Keyboard device and method for manufacturing the same
ALPS ELECTRIC CO LTD56 citations96
US5967298AOct 19, 1999
Keyboard device
ALPS ELECTRIC CO LTD25 citations92
US5754167AMay 19, 1998
Coordinate inputting device for a computer keyboard
ALPS ELECTRIC CO LTD44 citations88
US6556186B2Apr 29, 2003
Keyboard input device with pointing device for controlling cursor position on graphic display and the like
ALPS ELECTRIC CO LTD13 citations83
US6689977B2Feb 10, 2004
Keyswitch having a keytop that is upwardly and downwardly movable and method of assembling the same
ALPS ELECTRIC CO LTD8 citations73
US6225586B1May 1, 2001
Thin keyboard apparatus
ALPS ELECTRIC CO LTD14 citations73
US6152627ANov 28, 2000
Keyboard device having plurality of keyswitches
ALPS ELECTRIC CO LTD7 citations72
US6087604AJul 11, 2000
Thin keyboard
ALPS ELECTRIC CO LTD9 citations72
US6031189AFeb 29, 2000
Keyboard device
ALPS ELECTRIC CO LTD4 citations62
US6597344B1Jul 22, 2003
Key switch disposed on keyboard input device and method of producing the same
ALPS ELECTRIC CO LTD6 citations61
US6483050B1Nov 19, 2002
Key switch with easily attachable key top
ALPS ELECTRIC CO LTD6 citations61
US6909062B2Jun 21, 2005
Key-switch device corresponding to miniaturized notebook-size personal computer with reduced-thickness
ALPS ELECTRIC CO LTD3 citations59
US6777634B2Aug 17, 2004
Key-switch device corresponding to miniaturized notebook-size personal computer with reduced-thickness
ALPS ELECTRIC CO LTD3 citations59
US6312176B2Nov 6, 2001
Keyboard apparatus
ALPS ELECTRIC CO LTD3 citations57