Inventor

Hirohisa Warita

Inventor

Osaka, JP

Overview

16→

Patents

2001–2016

Patent span

Electricity

Primary field (CPC H)

Patents· 16 as inventor

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

H05Bprimary

H05BElectric heating36%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications24%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems15%

F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

F21KNon-electric light sources using luminescence3%

G01DMeasuring not specially adapted for a specific variable3%

G05FSystems for regulating electric or magnetic variables3%

H03KPulse technique3%

PatentTitleYear

9,497,808'LED drive circuit and LED illumination apparatus'2016 8,970,123'LED drive circuit and LED illumination light'2015 8,878,449'LED drive circuit and LED illumination unit'2014 8,810,135'LED drive circuit, LED illumination component, LED illumination device, and LED illumination system'2014 8,710,766'LED driving circuit, LED illumination appliance, LED illuminator, and LED illumination system'2014 8,692,469'LED drive circuit and LED illumination apparatus using the same'2014 8,653,751'LED drive circuit and LED illumination component using the same'2014 8,643,301'LED driver circuit and LED lighting device using the same'2014 8,421,371'LED drive circuit, LED illumination fixture, LED illumination device, and LED illumination system'2013 8,400,079'LED drive circuit, dimming device, LED illumination fixture, LED illumination device, and LED illumination system'2013 8,258,706'LED drive circuit, LED illumination component, LED illumination device, and LED illumination system'2012 7,737,773'Semiconductor device, step-down chopper regulator, and electronic equipment'2010 7,262,582'Switching power supply circuit and electronic apparatus provided therewith'2007 7,223,963'Optical encoder'2007 7,129,679'Power supply circuit having soft start'2006 6,201,674'Direct-current stabilization power supply device'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2016Patents assigned to SHARP KK (16)· patent assignee history

2001–2010Based in Nara, JP· patent location history

2007Based in Kitakatsuragi-gun, JP· patent location history

2012–2016Patents assigned to WARITA HIROHISA (11)· patent assignee history

2012–2014Patents assigned to MARIYAMA MITSURU (3)· patent assignee history

2012–2016Based in Osaka, JP· patent location history

2013–2016Patents assigned to KANAMORI ATSUSHI (9)· patent assignee history

2013–2016Patents assigned to SHIMIZU TAKAYUKI (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	16	2001–2016
WARITA HIROHISAself	11	2012–2016
KANAMORI ATSUSHI	9	2013–2016
SHIMIZU TAKAYUKI	7	2013–2016
MARIYAMA MITSURU	3	2012–2014

Locations

Location	Patents	Span
Osaka, JP	11	2012–2016
Nara, JP	3	2001–2010
Kitakatsuragi-gun, JP	2	2007