Chao; Ching-Chuan

Patent Applications and Registrations

Patent applications and USPTO patent grants for Chao; Ching-Chuan.The latest application filed is for "tablet system with inductive loops and cord less-battery less pointer apparatus controlled by multi-channel switches set and method for transmitting and receiving its signal".

Company Profile

0.12.12

Chao; Ching-Chuan - Taipei TW
Chao; Ching-Chuan - SanChung TW
Chao; Ching-Chuan - Sang Chung TW
Chao, Ching-Chuan - Sanchung City TW
Chao, Ching-Chuan - Hsinchu TW
Chao, Ching-Chuan - Sang Chung City TW
Chao; Ching-Chuan - Taipei Hsien TW

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Electromagnetic inductive system with multi-induction loop layout and battery less pointer device and its method for locating the coordinate Grant 7,358,964 - Chao , et al. April 15, 2	2008-04-15
Device and method for pointer system of digitizer tablet Grant 7,176,907 - Chao , et al. February 13, 2	2007-02-13
Electromagnetic induction pen-like device with writing function Grant 6,999,067 - Chao , et al. February 14, 2	2006-02-14
Computer peripheral input system with two input types and method of data communication for the same Grant 6,930,670 - Chao , et al. August 16, 2	2005-08-16
Tablet system with inductive loops and cord less-battery less pointer apparatus controlled by multi-channel switches set and method for transmitting and receiving its signal Grant 6,909,426 - Chao , et al. June 21, 2	2005-06-21
Electromagnetic induction system with single-induction-loop multi-induction-loop Grant 6,882,339 - Chao , et al. April 19, 2	2005-04-19
Antenna loop structure Grant 6,849,810 - Chao , et al. February 1, 2	2005-02-01
Tablet system with inductive loops and cord less-battery less pointer apparatus controlled by multi-channel switches set and method for transmitting and receiving its signal App 20040174343 - Chao, Ching-Chuan ; et al.	2004-09-09
N-shaped antenna loops of digitizer tablet for reducing antenna switches and the method for locating the cordless pen Grant 6,787,715 - Chao , et al. September 7, 2	2004-09-07
Electromagnetic induction system with single-induction-loop multi-induction-loop App 20040130534 - Chao, Ching-Chuan ; et al.	2004-07-08
Electromagnetic induction pen-like device with writing function App 20040125089 - Chao, Ching-Chuan ; et al.	2004-07-01
Pressure sensitive pen Grant 6,727,439 - Chao , et al. April 27, 2	2004-04-27
Electromagnetic inductive system with multi-induction loop layout and battery less pointer device and its method for locating the coordinate App 20040055793 - Chao, Ching-Chuan ; et al.	2004-03-25
Device and method for pointer system of digitizer tablet App 20030217871 - Chao, Ching-Chuan ; et al.	2003-11-27
Prepositive electro-magnetic tablet with transparent antenna App 20030188899 - Chao, Ching-Chuan ; et al.	2003-10-09
Layout for multi-antenna loops of the electromagnetic-induction system Grant 6,606,068 - Chao , et al. August 12, 2	2003-08-12
Layout For Multi-antenna Loops Of The Electromagnetic-induction System App 20030146881 - Chao, Ching-Chuan ; et al.	2003-08-07
Pressure sensitive pen App 20030141119 - Chao, Ching-Chuan ; et al.	2003-07-31
Computer peripheral input system with two input types and method of data communication for the same App 20030122786 - Chao, Ching-Chuan ; et al.	2003-07-03
Low EMI digitizer tablet App 20030010544 - Chao, Ching-Chuan ; et al.	2003-01-16
Antenna loop structure App 20030001824 - Chao, Ching-Chuan ; et al.	2003-01-02
N-shaped antenna loops of digitizer tablet for reducing antenna switches and the method for locating the cordless pen App 20020053474 - Chao, Ching-Chuan ; et al.	2002-05-09
Digitizer tablet apparatus with edge area as a macro cell Grant 6,184,864 - Chao February 6, 2	2001-02-06
Dual mode digitizer tablet system Grant 6,180,894 - Chao , et al. January 30, 2	2001-01-30

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