Assignee
Inventors
- Yasunori Ohta (249 patents)
- Shumpeita Torii (22 patents)
- Tsutomu Kimura (99 patents)
- Takenori Tomita (5 patents)
- Toru Itakura (27 patents)
- Takashi Shoji (102 patents)
- Masaaki Konno (51 patents)
- Hisao Seto (3 patents)
US Patent 4831461 · Granted May 16, 1989