Assignee
Inventors
- Yuugo Kumagai (3 patents)
- Ryouji Tan (1 patents)
- Takashi Ikeda (316 patents)
- Tetsuya Fujii (59 patents)
- Chiaki Okada (2 patents)
- Osamu Higashida (5 patents)
- Hatuo Sugitani (4 patents)
- Masato Fukasawa (20 patents)
US Patent 4985328 · Granted Jan 15, 1991