SA

Shigeyuki Akiba

KC Kokusai Denshin Denwa Co.: 70 patents #1 of 382Top 1%
KD Kdd: 5 patents #4 of 96Top 5%
KS Kdd Submarine Cable Systems: 5 patents #6 of 42Top 15%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
KD Kokusai Denshin Denwa Kabushiki Daisha: 1 patents #3 of 16Top 20%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Nishitokyo, JP: #1 of 277 inventorsTop 1%
Overall (All Time): #21,794 of 4,157,543Top 1%
82
Patents All Time

Issued Patents All Time

Showing 76–82 of 82 patents

Patent #TitleCo-InventorsDate
4553239 Distributed feedback semiconductor laser Katsuyuki Utaka, Kazuo Sakai, Yuichi Matsushima 1985-11-12
4516243 Distributed feedback semiconductor laser Katsuyuki Utaka, Kazuo Sakai 1985-05-07
4506367 Distributed feedback semiconductor laser Kazuo Sakai, Katsuyuki Utaka, Yuichi Matsushima 1985-03-19
4456998 Semiconductor laser Fujio Tanaka, Yasuyuki Okamura, Yukitoshi Kushiro, Chuichi Ota 1984-06-26
4383266 Avalanche photo diode Kazuo Sakai, Yuichi Matsushima, Takaya Yamamoto 1983-05-10
4340966 Semiconductor laser with buffer layer Yasuharu Suematsu, Shigehisa Arai, Masanobu Kodaira, Yoshio Itaya, Kenichi Iga +3 more 1982-07-20
4274103 Avalanche photodiode with semiconductor hetero structure Takaya Yamamoto, Kazuo Sakai 1981-06-16