Assignee
Inventors
- Seiichi Yamada (12 patents)
- Shigeru Tanaka (330 patents)
- Moritaka Shoji (2 patents)
- Shigehisa Motowaki (18 patents)
- Ken Takahashi (41 patents)
- Shingo Shirakawa (23 patents)
- Shinichi Oowada (1 patents)
- Takeo Yamazaki (38 patents)
US Patent 5614138 · Granted Mar 25, 1997