Inventor

Seiichi Nishiyama

Inventor

Mobara, JP

Overview

25→

Patents

1982–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 25 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 therein18%

G09GArrangements or circuits for control of indicating devices using static means to present variable information15%

H01JElectric discharge tubes or discharge lamps15%

H05BElectric heating15%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications9%

H03FAmplifiers7%

H03KPulse technique4%

H04NPictorial communication, e.g. television4%

G02BOptical elements, systems or apparatus3%

H03GControl of amplification3%

PatentTitleYear

8,334,945'Liquid crystal display device'2012 7,990,361'Liquid crystal display device having an improved backlight'2011 7,837,375'Planar illumination device and liquid crystal display device using the planar illumination device as a backlight'2010 7,817,223'Liquid crystal display device'2010 7,753,578'Liquid crystal display'2010 7,518,594'Liquid crystal display device having an improved backlight'2009 7,473,021'Liquid crystal display'2009 7,283,194'Liquid crystal display'2007 7,218,308'Liquid crystal display device having an improved backlight'2007 7,077,543'Liquid crystal display'2006 7,061,465'Liquid crystal display'2006 6,956,556'Liquid crystal display device having an improved backlight'2005 6,331,064'Liquid crystal display'2001 6,163,181'Frequency divider circuit and digital PLL circuit'2000 5,905,396'Clamp pulse circuit'1999 5,875,002'Clamp pulse circuit'1999 5,539,425'Display unit'1996 5,432,477'Wide frequency range amplifier apparatus'1995 5,337,010'Wide-band amplifier apparatus'1994 5,317,200'Phase shift circuit apparatus'1994 5,294,929'Control system for peripheral devices'1994 5,256,983'Wide band amplifier'1993 5,252,931'Wide band frequency amplifiers'1993 5,180,989'Wideband amplifier'1993 4,354,996'Method for making a plastic container'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Based in Kawasaki, JP· patent location history

1993–2000Patents assigned to SONY CORP (11)· patent assignee history

1993–2000Based in Kanagawa, JP· patent location history

2001–2011Patents assigned to HITACHI ELECTRONIC DEVICES CO (6)· patent assignee history

2001–2011Patents assigned to HITACHI LTD (5)· patent assignee history

2001–2012Based in Mobara, JP· patent location history

2010–2012Patents assigned to HITACHI DISPLAYS LTD (3)· patent assignee history

2010Patents assigned to HITACHI DISPLAY DEVICES LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONY CORP	11	1993–2000
HITACHI ELECTRONIC DEVICES CO	6	2001–2011
HITACHI LTD	5	2001–2011
HITACHI DISPLAYS LTD	3	2010–2012
HITACHI DISPLAY DEVICES LTD	2	2010

Locations

Location	Patents	Span
Mobara, JP	13	2001–2012
Kanagawa, JP	11	1993–2000
Kawasaki, JP	1	1982