Inventor

Ken Kawahata

Inventor

Miyagi, JP

Overview

19→

Patents

1998–2017

Patent span

Physics

Primary field (CPC G)

Patents· 19 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein24%

G09GArrangements or circuits for control of indicating devices using static means to present variable information24%

H10DInorganic electric semiconductor devices14%

G01RMeasuring electric variables5%

G06VImage or video recognition or understanding5%

G11CStatic stores5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

A46BBrushes3%

A61BDiagnosis3%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure3%

PatentTitleYear

9,772,354'Output circuit with limited output voltage range and reduced power consumption and current sensor having the same'2017 9,702,909'Manufacturing method for current sensor and current sensor'2017 7,102,364'Capacitance detecting circuit and detecting method, and fingerprint sensor employing the same'2006 6,963,327'Shift register circuit including first shift register having plurality of stages connected in cascade and second shift register having more stages'2005 6,862,942'Surface pressure distribution sensor'2005 6,707,441'Active matrix type liquid crystal display device, and substrate for the same'2004 6,621,886'Shift register having fewer lines therein, and liquid crystal display having the same'2003 6,593,939'Image display device and driver circuit therefor'2003 6,583,777'Active matrix type liquid crystal display device, and substrate for the same'2003 6,507,375'Liquid crystal display device in which neighboring pixel electrodes overlap source line by different widths'2003 6,356,318'Active-matrix liquid crystal display having storage capacitors of area smaller than that of pixel electrodes'2002 6,331,862'Image expansion display and driver'2001 6,297,793'Liquid-crystal display device'2001 6,011,530'Liquid crystal display'2000 5,879,958'Method of producing an electro-optical device'1999 5,870,071'LCD gate line drive circuit'1999 5,869,351'Method of producing an electro-optical device'1999 5,837,559'Method of producing an electro-optical device'1998 5,726,077'Method of producing an electro-optical device'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2000Patents assigned to FRONTEC INC (6)· patent assignee history

1998–1999Based in Sendai, JP· patent location history

1999–2017Based in Miyagi, JP· patent location history

2001–2017Patents assigned to ALPS ELECTRIC CO LTD (11)· patent assignee history

2001–2004Patents assigned to LG PHILIPS LCD CO LTD (4)· patent assignee history

2005Patents assigned to ALPS ELECTRONICS CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALPS ELECTRIC CO LTD	11	2001–2017
FRONTEC INC	6	1998–2000
LG PHILIPS LCD CO LTD	4	2001–2004
ALPS ELECTRONICS CO LTD	1	2005

Locations

Location	Patents	Span
Miyagi, JP	15	1999–2017
Sendai, JP	4	1998–1999