JK

Jun Kumagai

PA Panasonic: 15 patents #1,528 of 21,108Top 8%
MC Mitsubishi Shindoh Co.: 2 patents #25 of 65Top 40%
OU Osaka University: 1 patents #681 of 1,984Top 35%
SC Sumitomo Chemical: 1 patents #2,469 of 4,033Top 65%
TC Taiyo Yuden Co.: 1 patents #643 of 959Top 70%
Overall (All Time): #235,177 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11848142 Multilayer coil component and method for manufacturing same, as well as circuit board carrying multilayer coil component Shuhei Kurahashi 2023-12-19
10253405 Cu—Ni—Si-based copper alloy sheet having excellent mold abrasion resistance and shear workability and method for manufacturing same Yoshio Abe, Akira Saito, Shuzo Umezu, Ryo Iino 2019-04-09
9169539 Cu-Mg-P-based copper alloy sheet having excellent fatigue resistance characteristic and method of producing the same Yoshio Abe, Shunroku Sukumoda 2015-10-27
8638039 Electronic ballast and method for providing a DC voltage component during lamp startup Naoki Komatu, Nobuo Ukita, Kazuhiko Harada 2014-01-28
8593077 High-voltage discharge lamp lighting device and lighting fixture Naoki Komatsu 2013-11-26
8531124 High pressure discharge lamp lighting device and illumination instrument Naoki Komatsu 2013-09-10
8502475 Discharge lamp ballast with feedback current control during an electrode heating operation Nobutoshi Matsuzaki, Satoru Nagata 2013-08-06
8395327 High-pressure discharge lamp lighting device and lighting fixture using the same Satoru Nagata, Keisuke Sato, Naoki Komatsu 2013-03-12
8344095 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 Masahiro Miura, Tetsuya Satoh, Hayato TSURUGI, Masato Ueda 2013-01-01
8299723 Electronic ballast with lamp flicker suppression during start-to-steady state transition Satoru Nagata, Nobutoshi Matsuzaki 2012-10-30
8294385 High-pressure discharge lamp ballast with multi-mode lamp starting circuit Nobutoshi Matsuzaki, Satoru Nagata 2012-10-23
8232746 High pressure discharge lamp lighting device and lighting fixture using the same Akira Yufuku, Hiroyasu Eriguchi, Takeshi Goriki, Takeshi Kamoi, Naoki Komatsu +3 more 2012-07-31
8228006 High pressure discharge lamp lighting device and lighting fixture using the same Naoki Komatsu, Hiroyasu Eriguchi, Takeshi Goriki, Takeshi Kamoi, Akira Yufuku +3 more 2012-07-24
8222830 Discharge lamp lighting device, lighting fixture, and lighting system Satoru Nagata, Naoki Komatsu 2012-07-17
8115405 High pressure discharge lamp lighting device and luminaire using same Daisuke Yamahara, Nobutoshi Matsuzaki, Takeshi Kamoi, Satoru Nagata, Naoki Komatsu 2012-02-14
8044601 High voltage discharge lamp lighting device Nobutoshi Matsuzaki, Hiroyasu Eriguchi, Takeshi Goriki, Takeshi Kamoi, Naoki Komatu +3 more 2011-10-25
7425802 Discharge lamp lighting apparatus, luminaire and illumination system Satoru Nagata, Minoru Maehara, Naoki Komatsu 2008-09-16
7141937 High-pressure discharge lamp operation device and illumination appliance having the same Akihiro Kishimoto, Hirofumi Konishi 2006-11-28
5942859 Discharge lamp lighting device Akio Okude, Kouji Noro, Hiromitsu Mizukawa 1999-08-24