Assignee
Inventors
- Keiji Oohashi (6 patents)
- Tsuyoshi Shimomichi (14 patents)
- Etsuo Ino (2 patents)
- Tetsuo Hayano (1 patents)
- Kazunaga Kobayashi (11 patents)
- Katuyoshi Ishida (1 patents)
- Hajime Takemoto (22 patents)
- Masao Tachikura (19 patents)
US Patent 6195489 · Granted Feb 27, 2001