Inventor

Kanetaka Sekiguchi

Inventor

Sayama, JP

Overview

1985–2009

Patent span

Physics

Primary field (CPC G)

Patents· 47 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 therein58%

G04GElectronic time-pieces16%

G09GArrangements or circuits for control of indicating devices using static means to present variable information5%

G04CElectromechanical clocks or watches4%

G06FElectric digital data processing4%

B41JTypewriters1%

G02BOptical elements, systems or apparatus1%

G03CPhotosensitive materials for photographic purposes1%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices1%

G04BMechanically-driven clocks or watches1%

PatentTitleYear

7,609,359'Method of manufacturing liquid crystal panel'2009 7,583,335'Liquid crystal display device'2009 7,489,381'Liquid-crystal optical element, camera using the same, and optical pickup device using the same'2009 7,443,464'Liquid crystal display unit'2008 7,321,414'Liquid crystal display panel'2008 7,215,401'Liquid crystal display device'2007 7,170,568'Liquid crystal shutter device for color imaging on photosensitive medium'2007 7,161,569'Driving method of liquid crystal display panel and liquid crystal display device'2007 7,136,138'Liquid crystal display device'2006 7,019,809'Liquid crystal display panel having an insulating member to protect lead electrodes'2006 6,937,301'Time piece with power generation function'2005 6,847,428'Camera having a liquid crystal display device'2005 6,819,374'Liquid crystal display panel'2004 6,791,905'Timepiece'2004 6,774,970'Liquid crystal panel'2004 6,771,327'Liquid crystal display device with an input panel'2004 6,768,532'Liquid crystal display panel'2004 6,751,164'Time piece'2004 6,738,112'Liquid crystal display with particular use of diffusing films'2004 6,690,438'Liquid crystal display panel'2004 6,646,697'Liquid crystal display'2003 6,643,224'Timepiece including multiple liquid crystal displays'2003 6,624,858'Light scattering type liquid crystal display panel for timepiece'2003 6,580,479'Timepiece'2003 6,577,361'Liquid crystal display'2003 6,577,360'Liquid crystal display'2003 6,567,060'Liquid display'2003 6,556,515'Watch with liquid crystal display panel'2003 6,529,255'Liquid crystal display panel'2003 6,512,556'Liquid crystal display and method of manufacturing the same'2003 6,429,840'Method of driving color liquid crystal display panel and method of controlling display of timepiece'2002 6,388,720'Liquid crystal display including signal electrodes connected to each other by first anode oxide electrode and auxiliary electrode connected to second anode oxide electrode'2002 6,351,297'Liquid crystal display panel for using in a timepiece comprising reflective polarizers and absorption film'2002 6,327,443'Liquid crystal display device'2001 6,292,439'Watch'2001 6,271,901'Liquid crystal display device with two reflective polarizers providing metallic appearance effects'2001 6,128,050'Liquid crystal display device with separated anode oxide electrode'2000 6,084,650'LCD having an area of color filter or reflector at each pixel region being smaller than an area of a pixel region'2000 5,893,621'Liquid crystal display and method of manufacturing the same'1999 5,861,928'Liquid crystal display device having opening portions'1999 5,596,432'Liquid crystal display having illuminated nonlinear resistance elements'1997 4,748,445'Matrix display panel having a diode ring structure as a resistive element'1988 4,673,253'Method of making a liquid crystal display with color filters'1987 4,655,552'Flat panel display device having on-screen data input function'1987 4,642,620'Matrix display device'1987 4,610,509'Liquid crystal color display panels'1986 4,502,204'Method of manufacturing insulated gate thin film field effect transistors'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2007Patents assigned to CITIZEN WATCH CO LTD (40)· patent assignee history

1985–2003Based in Tokorozawa, JP· patent location history

1986–1987Based in Saitama, JP· patent location history

1997–2009Based in Sayama, JP· patent location history

2007–2008Patents assigned to NEC LCD TECHNOLOGIES LTD (2)· patent assignee history

2007Based in Tokyo, JP· patent location history

2008–2009Patents assigned to CITIZEN HOLDINGS CO LTD (5)· patent assignee history

2009Based in Nishitokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CITIZEN WATCH CO LTD	40	1985–2007
CITIZEN HOLDINGS CO LTD	5	2008–2009
NEC LCD TECHNOLOGIES LTD	2	2007–2008

Locations

Location	Patents	Span
Sayama, JP	36	1997–2009
Tokorozawa, JP	6	1985–2003
Saitama, JP	2	1986–1987
Nishitokyo, JP	1	2009
Tokyo, JP	1	2007