LexDanaLexDanabeta
Inventor

Hiroyuki Shoji

Inventor
Hitachi, JP

Overview

46→
Patents
1997–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 46 as inventor

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

H02Mprimary
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 systems25%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications19%
H05BElectric heating9%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation5%
Y02TClimate change mitigation technologies related to transportation5%
B60LPropulsion of electrically-propelled vehicles4%
H02JElectric power networks4%
H10HInorganic light-emitting semiconductor devices having potential barriers3%
PatentTitleYear
10,541,549Power supply apparatus202010,461,553Power source device201910,333,398Charging apparatus20199,595,841'DC-DC converter, secondary battery charge and discharge system, and method of controlling DC-DC converter'20179,025,345'Power supply apparatus'20158,810,135'LED drive circuit, LED illumination component, LED illumination device, and LED illumination system'20148,643,301'LED driver circuit and LED lighting device using the same'20148,629,661'Bidirectional DC-DC converter and control method thereof'20148,614,568'Gate drive circuit of the voltage drive type semiconductor element and power converter'20138,605,464'Power converter, control method of power converter, and hard disk drive'20138,513,823'Semiconductor package having main stamp and sub-stamp'20138,378,646'Bidirectional dc-dc converter and control method thereof'20138,258,706'LED drive circuit, LED illumination component, LED illumination device, and LED illumination system'20128,207,717'Buck-boost DC-DC converter with auxiliary inductors for zero current switching'20128,203,322'DC-DC converter'20128,203,855'Complex inductor and power supply unit'20128,198,834'LED drive circuit'20128,130,515'Bi-directional DC-DC converter and method for controlling the same'20128,035,754'Receiver apparatus and information recording/outputting apparatus'20117,936,573'Bi-directional DC-DC converter and control method'20117,911,810'Bi-directional DC-DC converter and method for controlling the same'20117,907,962'Radio communications system, base station apparatus and method of transmission power control'20117,848,118'Bi-directional DC-DC converter and method for controlling the same'20107,812,575'Bidirectional DC-DC converter and power supply apparatus with the same'20107,808,086'Lead frame and manufacturing method thereof, and semiconductor apparatus and manufacturing method thereof'20107,692,935'Bi-directional DC-DC converter and control method'20107,683,597'PWM signal generating circuit and power supply apparatus comprising such PWM signal generating circuit'20107,638,904'Isolated bidirectional DC-DC converter'20097,557,546'Unidirectional DC-DC converter'20097,551,462'Soft switching DC-DC converter including a buck converter and a boost converter sharing a common transformer'20097,425,727'Optical semiconductor device, method for fabricating the same, lead frame and electronic equipment'20087,410,305'Optical semiconductor device, optical communication device, and electronic equipment'20087,358,535'Photo-coupler semiconductor device and production method therefor'20087,268,611'Semiconductor device and memory card using same'20077,234,231'Method of manufacturing a lead frame'20077,187,073'Resin-molded package with cavity structure'20077,009,166'Photocoupler, method for producing the same, and electronic device equipped with the photocoupler'20067,004,325'Resin-molded package with cavity structure'20066,734,641'Device for turning on light and illumination apparatus'20046,683,418'Inverter type illumination lighting apparatus'20046,570,343'Device for turning on light and illumination apparatus'20036,270,712'Molding die and marking method for semiconductor devices'20016,222,327'Lighting device for illumination and lamp provided with the same'20016,124,680'Lighting device for illumination and lamp provided with the same'20005,977,725'Resonance type power converter unit, lighting apparatus for illumination using the same and method for control of the converter unit and lighting apparatus'19995,608,829'Optical connector having optical fiber protection member'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2013Patents assigned to HITACHI LTD (15)· patent assignee history
1999–2015Based in Hitachi, JP· patent location history
2001–2014Patents assigned to SHARP KK (11)· patent assignee history
2006–2010Based in Kawasaki, JP· patent location history
2008–2011Based in Katsuragi, JP· patent location history
2010–2013Patents assigned to HITACHI COMP PERIPHERALS CO (7)· patent assignee history
2012–2015Patents assigned to SHOJI HIROYUKI (14)· patent assignee history
2012–2015Patents assigned to SHIMADA TAKAE (6)· patent assignee history
2012–2014Based in Osaka, JP· patent location history
2014–2019Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD151999–2013
SHOJI HIROYUKIself142012–2015
SHARP KK112001–2014
HITACHI COMP PERIPHERALS CO72010–2013
SHIMADA TAKAE62012–2015
Locations
LocationPatentsSpan
Hitachi, JP231999–2015
Osaka, JP42012–2014
Tokyo, JP32014–2019
Katsuragi, JP32008–2011
Kawasaki, JP32006–2010