Inventor

Tomoharu Nakamura

Inventor

Tokyo, JP

Overview

34→

Patents

1984–2021

Patent span

Physics

Primary field (CPC G)

Patents· 34 as inventor

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

Y02Eprimary

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution11%

G02BOptical elements, systems or apparatus10%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%

H02SGeneration of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules8%

G01RMeasuring electric variables6%

G03GElectrography5%

H02JElectric power networks5%

H01LSemiconductor devices4%

H10HInorganic light-emitting semiconductor devices having potential barriers4%

F21KNon-electric light sources using luminescence3%

PatentTitleYear

11,052,738Deflector structure for sunroof device2021 10,877,346Light-emitting device, display apparatus, and illumination apparatus2020 10,488,572Light emitting unit, display, and lighting apparatus2019 10,340,849Diagnosis system and diagnosis method for photovoltaic power generation system2019 10,312,858Solar power generation system and failure diagnosis method therefor2019 10,288,259Light emitting unit, display, and lighting apparatus2019 10,041,648Light emitting unit, display, and lighting apparatus2018 9,998,071Failure diagnosis method and failure diagnosis system for photovoltaic system2018 9,915,769'Light emitting unit, display, and lighting apparatus'2018 9,837,957Diagnostic method for solar power system and monitoring device2017 9,769,040'Monitoring apparatus, monitoring method and computer readable medium for monitoring'2017 9,742,189'Microgrid control system'2017 9,711,663'Power generating system and method of designing power generating system'2017 9,651,631'Method of calculating characteristics of solar cell and solar power generation system'2017 9,506,971'Failure diagnosis method for photovoltaic power generation system'2016 9,423,554'Light emitting unit, display, and lighting apparatus'2016 9,310,741'Image forming apparatus and colorimetric apparatus'2016 9,304,161'Solar power generation system, abnormality detection method, and abnormality detection system'2016 9,275,200'Information processing device, license assignment method, and computer-readable, non-transitory medium'2016 9,239,418'Light emitting device, display unit, and illumination unit'2016 9,201,372'Recording-material identifying apparatus and image forming apparatus'2015 9,110,204'Light emitting device, display unit, and illumination unit'2015 9,058,000'Recording material determination device and image forming apparatus'2015 9,055,138'Information processing device, information processing method, and computer readable medium'2015 8,875,581'Ultrasonic wave control device and recording material determining device'2014 8,861,999'Recording-material identifying apparatus and image forming apparatus'2014 8,491,144'Light emitting device and display device using the same'2013 8,348,446'Area light source device and display device'2013 6,338,009'Method and apparatus for estimating frequency characteristics of power system, and application thereof'2002 5,703,791'Electric power system stabilization control apparatus and method thereof'1997 5,349,522'Method and apparatus for controlling the output voltage of an AC electrical system'1994 5,061,922'Method of monitoring changes of state of a power transmission system by interruption signal transmission'1991 4,891,570'Static var compensator with thyristor control'1990 4,430,683'Ground fault detecting device for use with a DC circuit'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2019Patents assigned to HITACHI LTD (15)· patent assignee history

1984–2017Based in Hitachi, JP· patent location history

1991–2002Based in Hitachiota, JP· patent location history

1994–1997Based in Hitachioota, JP· patent location history

2013–2017Patents assigned to NAKAMURA TOMOHARU (10)· patent assignee history

2013–2019Patents assigned to SONY CORP (7)· patent assignee history

2013–2020Based in Tokyo, JP· patent location history

2014–2016Patents assigned to CANON KK (5)· patent assignee history

2014–2015Patents assigned to EBIHARA SHUN-ICHI (3)· patent assignee history

2016–2017Based in Kahoku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	15	1984–2019
NAKAMURA TOMOHARUself	10	2013–2017
SONY CORP	7	2013–2019
CANON KK	5	2014–2016
EBIHARA SHUN-ICHI	3	2014–2015

Locations

Location	Patents	Span
Tokyo, JP	22	2013–2020
Hitachi, JP	3	1984–2017
Kahoku, JP	2	2016–2017
Hitachiota, JP	2	1991–2002
Hitachioota, JP	2	1994–1997