Inventor
TSAI CHING CHENG
TW31 patents
⚠️ This page may combine multiple inventors who share the name “TSAI CHING CHENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHICONY ELECTRONICS CO LTD
26 patentsUS5794762AAug 18, 1998
Key switch structure
CHICONY ELECTRONICS CO LTD23 citations92
US5769210AJun 23, 1998
Scissors-type key switch
CHICONY ELECTRONICS CO LTD31 citations92
US5760351AJun 2, 1998
Rubber cone layer of a keyboard
CHICONY ELECTRONICS CO LTD19 citations92
USD375088SOct 29, 1996
Keyboard
CHICONY ELECTRONICS CO LTD26 citations92
US5770824AJun 23, 1998
Key switch arrangement for notebook computers
CHICONY ELECTRONICS CO LTD23 citations90
US5763842AJun 9, 1998
Key switch arrangement for notebook computers
CHICONY ELECTRONICS CO LTD47 citations90
US6971807B2Dec 6, 2005
Waterproof keyboard
CHICONY ELECTRONICS CO LTD23 citations87
US7291037B2Nov 6, 2007
Flexible circuit board
CHICONY ELECTRONICS CO LTD13 citations84
US6644874B2Nov 11, 2003
Keyboard with liquid-draining function
CHICONY ELECTRONICS CO LTD17 citations84
US6392176B1May 21, 2002
Keyswitch of keyboard
CHICONY ELECTRONICS CO LTD18 citations84
US6252184B1Jun 26, 2001
Droplet proof keyboard for notebook computer
CHICONY ELECTRONICS CO LTD18 citations81
US6040540AMar 21, 2000
Keyswitch structure
CHICONY ELECTRONICS CO LTD18 citations81
US7045722B2May 16, 2006
Key structure of computer keyboard
CHICONY ELECTRONICS CO LTD8 citations74
US6259434B1Jul 10, 2001
Tactually-activated structure
CHICONY ELECTRONICS CO LTD12 citations74
US6056459AMay 2, 2000
Balance device for key
CHICONY ELECTRONICS CO LTD14 citations74
US5496982AMar 5, 1996
Key switch
CHICONY ELECTRONICS CO LTD18 citations74
US5428502AJun 27, 1995
Keyboard frame assembly mounting hardware having hooks, bridge strips, and locating stub rods
CHICONY ELECTRONICS CO LTD11 citations74
US8870505B2Oct 28, 2014
Riveting assembly
CHICONY ELECTRONICS CO LTD4 citations73
US7810961B2Oct 12, 2010
Energy-saving light-emitting module
CHICONY ELECTRONICS CO LTD2 citations63
US7750261B2Jul 6, 2010
Waterproof keyboard
CHICONY ELECTRONICS CO LTD5 citations63
US5899617AMay 4, 1999
Flexible component reinforcing mechanism
CHICONY ELECTRONICS CO LTD5 citations63
USD361563SAug 22, 1995
Computer keyboard with a curved top configuration
CHICONY ELECTRONICS CO LTD5 citations63
US6169255B1Jan 2, 2001
Flexible membrane circuit structure for keyswitch
CHICONY ELECTRONICS CO LTD3 citations60
US8350172B2Jan 8, 2013
Illuminated keyboard
CHICONY ELECTRONICS CO LTD2 citations57
US10121613B2Nov 6, 2018
Keyswitch device, keyboard, and membrane circuit board
CHICONY ELECTRONICS CO LTD1 citations46
US9734966B2Aug 15, 2017
Membrane circuit board and light-emitting keyboard using the same
CHICONY ELECTRONICS CO LTD0 citations42