TY

Takamasa Yoshikawa

Pioneer Electronic: 20 patents #35 of 1,840Top 2%
Pioneer: 11 patents #127 of 1,730Top 8%
Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
HO Hoya: 1 patents #757 of 1,290Top 60%
SC Shinko Electric Industries Co.: 1 patents #437 of 723Top 65%
Overall (All Time): #82,774 of 4,157,543Top 2%
39
Patents All Time

Issued Patents All Time

Showing 1–25 of 39 patents

Patent #TitleCo-InventorsDate
11088006 Electrostatic chuck Hiroharu Yanagisawa, Nobuyuki Iijima 2021-08-10
7994698 Electron emitting device, display apparatus using electron emitting device, and method of manufacturing electron emitting device Ryota Tanaka, Nobuyasu Negishi, Kazuto Sakemura, Yoshiyuki Okuda, Tomonari Nakada +2 more 2011-08-09
7902760 Electron emission device, and driving method thereof Nobuyasu Negishi, Kazuto Sakemura, Kiyohide Ogasawara 2011-03-08
7348531 Photoelectric conversion device and image pickup device using electron emission devices Yoshiyuki Okuda, Saburo Aso, Katsumi Yoshizawa, Hideo Satoh, Nobuyasu Negishi +1 more 2008-03-25
7125144 Illumination device and illumination method Yusaku Shimaoka 2006-10-24
7118227 Projection display device Shinya Sannohe, Hideki Ishinaga 2006-10-10
7095040 Electron-emitting device and method of manufacturing the same and display apparatus using the same Shingo Iwasaki, Takashi Yamada, Takuya Hata, Takashi Chuman, Nobuyasu Negishi +4 more 2006-08-22
7033030 Projection-type display apparatus Shinya Sannohe, Hideki Ishinaga 2006-04-25
7010939 Glass substrate for data recording medium and manufacturing method thereof Koichi Suzuki 2006-03-14
6787992 Display device of flat panel structure with emission devices of matrix array Takashi Chuman, Takuya Hata, Kazuto Sakemura, Takashi Yamada, Nobuyasu Negishi +4 more 2004-09-07
6776510 Light source device, adjusting device therefore and production method therefore, and illuminating device and projection type display device provided with light source device Yuusaku Shimaoka, Shinya Sannohe 2004-08-17
6744063 Image pickup device including electron-emitting devices Hideo Satoh, Atsushi Yoshizawa, Takashi Yamada, Takashi Chuman, Nobuyasu Negishi +4 more 2004-06-01
6700132 Flat panel display device utilizing electron emission devices Takashi Chuman, Takuya Hata, Kazuto Sakemura, Takashi Yamada, Nobuyasu Negishi +4 more 2004-03-02
6641887 Optical recording medium Tetsuya Iida, Katsuhiro Koike 2003-11-04
6488378 Imaging apparatus Toshiaki Tabuchi, Hideki Ishinaga, Toshiyuki Ueda, Isao Kakuhari, Kenichi Terai 2002-12-03
6472803 Electron emission light-emitting device and display apparatus using the same Atsushi Yoshizawa, Hideo Satoh, Takashi Yamada, Takashi Chuman, Nobuyasu Negishi +4 more 2002-10-29
6404124 Electron emission device and display apparatus using the same Kazuto Sakemura, Shuuichi Yanagisawa, Shingo Iwasaki, Nobuyasu Negishi, Takashi Chuman +4 more 2002-06-11
6400070 Electron emission device and display device using the same Takashi Yamada, Kiyohide Ogasawara, Takashi Chuman, Nobuyasu Negishi, Shingo Iwasaki +4 more 2002-06-04
6388376 Electron emission device with electron supply layer having reduced resistance Nobuyasu Negishi, Takuya Hata, Atsushi Yoshizawa, Hideo Satoh, Takashi Yamada +4 more 2002-05-14
6316873 Electron emission device and display device using the same Hiroshi Ito, Kiyohide Ogasawara, Takashi Chuman, Nobuyasu Negishi, Shingo Iwasaki +4 more 2001-11-13
6285123 Electron emission device with specific island-like regions Takashi Yamada, Atsushi Yoshizawa, Takuya Hata, Shingo Iwasaki, Nobuyasu Negishi +4 more 2001-09-04
6278230 Electron emission device and display device using the same Atsushi Yoshizawa, Kiyohide Ogasawara, Takashi Chuman, Nobuyasu Negishi, Shingo Iwasaki +4 more 2001-08-21
6259198 Flat panel display apparatus with an array of electron emitting devices Shuuchi Yanagisawa, Kazuto Sakemura, Atsushi Yoshizawa, Takashi Chuman, Nobuyasu Negishi +4 more 2001-07-10
6184612 Electron emission device with electron supply layer of hydrogenated amorphous silicon Nobuyasu Negishi, Kiyohide Ogasawara, Takashi Chuman, Shingo Iwasaki, Hiroshi Ito +4 more 2001-02-06
6166487 Electron emission device and display device using the same Nobuyasu Negishi, Takashi Chuman, Kiyohide Ogasawara, Shingo Iwasaki, Hiroshi Ito 2000-12-26