KW

Keiji Watanabe

Fujitsu Limited: 49 patents #280 of 24,456Top 2%
Canon: 16 patents #4,160 of 19,416Top 25%
Mitsubishi Electric: 16 patents #1,485 of 25,717Top 6%
HI Hitachi: 13 patents #3,142 of 28,497Top 15%
NC Nkk Co.: 7 patents #58 of 1,173Top 5%
NC Nitto Chemical Industry Co.: 5 patents #21 of 179Top 15%
Sharp Kabushiki Kaisha: 5 patents #3,007 of 10,731Top 30%
MT Mitsui Chemicals Tohcello: 4 patents #9 of 76Top 15%
MC Mitsui Chemicals: 3 patents #648 of 2,279Top 30%
NC Nippon Shokubai Co.: 1 patents #656 of 1,108Top 60%
DC Dai-Ichi Kogyo Seiyaku Co.: 1 patents #153 of 288Top 55%
FL Fujitsu Isotec Limited: 1 patents #22 of 54Top 45%
HC Hitachi Chemical Company: 1 patents #1,071 of 1,946Top 60%
HC Hitachi Koki Co.: 1 patents #557 of 888Top 65%
JS Jfe Steel: 1 patents #825 of 1,401Top 60%
CC Citizen Electronics Co.: 1 patents #144 of 252Top 60%
MI Mitsui Petrochemical Industries: 1 patents #503 of 1,024Top 50%
Overall (All Time): #10,462 of 4,157,543Top 1%
117
Patents All Time

Issued Patents All Time

Showing 101–117 of 117 patents

Patent #TitleCo-InventorsDate
5091222 Method for forming a ceramic film Hiroaki Nishio, Michitaka Sato 1992-02-25
5091285 Method of forming pattern by using an electroconductive composition Yasuhiro Yoneda, Koichi Kobayashi, Keiko Yano, Tomio Nakamura, Shigeru Shimizu 1992-02-25
5073330 Method of molding polysilazane Hiroaki Nishio, Michitaka Sato 1991-12-17
5073743 Electrode for discharge light source Toshiro Kajiwara, Goroku Kobayashi, Keiji Fukuyama, Ko Sano, Yojiro Yano 1991-12-17
5021213 Method of casting powder Hiroaki Nishio, Akira Kato, Michitaka Sato 1991-06-04
5015497 Cathode for electron tube and manufacturing method thereof Kinjiro Sano, Toyokazu Kamata, Keiji Fukuyama, Masato Saito 1991-05-14
4983368 Method of producing .beta.-sialon fine powder Michitaka Sato, Hiroaki Nishio 1991-01-08
4935199 Process for producing high density sintered body Hiroaki Nishio, Michitaka Satoh 1990-06-19
4924137 Cathode for electron tube Keiji Fukuyama, Masako Ishida, Ryo Suzuki, Masato Saito 1990-05-08
4897574 Hot cathode in wire form Masato Saito, Keiji Fukuyama, Masako Ishida, Toyokazu Kamata, Kinjiro Sano +1 more 1990-01-30
4864187 Cathode for electron tube and manufacturing method thereof Kinjiro Sano, Toyokazu Kamata, Keiji Fukuyama, Masato Saito 1989-09-05
4797593 Cathode for electron tube Masato Saito, Keiji Fukuyama, Masako Ishida, Toyokazu Kamata, Kinjiro Sano 1989-01-10
4629929 Metal vapor discharge lamp Masato Saito, Ryo Suzuki, Michihiro Tsuchihashi 1986-12-16
4418300 Metal vapor discharge lamp with heat insulator and starting aid Katsuya Otani, Ryo Suzuki, Michihiro Tsuchihashi 1983-11-29
4377772 Discharge lamp and lighting equipment Michihiro Tsuchihashi, Ryo Suzuki, Masato Saito 1983-03-22
4345186 Metal vapor discharge lamp Masato Saito, Michihiro Tsuchihashi, Yoshinori Takai, Keiji Fukuyama 1982-08-17
4319158 Electrode for discharge lamp Masato Saito, Keiji Fukuyama 1982-03-09