LexDanaLexDanabeta
Inventor

Jun Kumagai

Inventor
Suita, JP

Overview

18→
Patents
1999–2019
Patent span
Electricity
Primary field (CPC H)

Patents· 18 as inventor

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

H05Bprimary
H05BElectric heating34%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications25%
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 systems7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
C22CAlloys5%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys5%
H01BCables5%
C07DHeterocyclic compounds2%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%
F21VFunctional features or details of lighting devices or systems thereof2%
PatentTitleYear
10,253,405Cu--Ni--Si-based copper alloy sheet having excellent mold abrasion resistance and shear workability and method for manufacturing same20199,169,539'Cu-Mg-P-based copper alloy sheet having excellent fatigue resistance characteristic and method of producing the same'20158,638,039'Electronic ballast and method for providing a DC voltage component during lamp startup'20148,593,077'High-voltage discharge lamp lighting device and lighting fixture'20138,531,124'High pressure discharge lamp lighting device and illumination instrument'20138,502,475'Discharge lamp ballast with feedback current control during an electrode heating operation'20138,395,327'High-pressure discharge lamp lighting device and lighting fixture using the same'20138,344,095'Fused ring compound, method for producing the same, polymer, organic thin film containing the compound and/or polymer, and organic thin film device and organic thin film transistor each comprising the organic thin film'20138,299,723'Electronic ballast with lamp flicker suppression during start-to-steady state transition'20128,294,385'High-pressure discharge lamp ballast with multi-mode lamp starting circuit'20128,232,746'High pressure discharge lamp lighting device and lighting fixture using the same'20128,228,006'High pressure discharge lamp lighting device and lighting fixture using the same'20128,222,830'Discharge lamp lighting device, lighting fixture, and lighting system'20128,115,405'High pressure discharge lamp lighting device and luminaire using same'20128,044,601'High voltage discharge lamp lighting device'20117,425,802'Discharge lamp lighting apparatus, luminaire and illumination system'20087,141,937'High-pressure discharge lamp operation device and illumination appliance having the same'20065,942,859'Discharge lamp lighting device'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2013Based in Kadoma, JP· patent location history
2011Based in Osaka, JP· patent location history
2012–2014Patents assigned to KUMAGAI JUN (12)· patent assignee history
2012–2014Patents assigned to PANASONIC CORP (10)· patent assignee history
2012–2013Patents assigned to NAGATA SATORU (8)· patent assignee history
2012–2013Patents assigned to KOMATSU NAOKI (7)· patent assignee history
2012–2013Patents assigned to MATSUZAKI NOBUTOSHI (6)· patent assignee history
2012–2014Based in Suita, JP· patent location history
2012Based in Himeji, JP· patent location history
2015–2019Based in Aizuwakamatsu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KUMAGAI JUNself122012–2014
PANASONIC CORP102012–2014
NAGATA SATORU82012–2013
KOMATSU NAOKI72012–2013
MATSUZAKI NOBUTOSHI62012–2013
Locations
LocationPatentsSpan
Suita, JP102012–2014
Kadoma, JP41999–2013
Aizuwakamatsu, JP22015–2019
Himeji, JP12012
Osaka, JP12011