Assignee
Inventors
- Hitoshi Nagato (41 patents)
- Tsutomu Saito (106 patents)
- Shuzo Hirahara (34 patents)
- Tetuo Okuyama (1 patents)
- Satoshi Takayama (76 patents)
- Sakae Tamura (5 patents)
- Shunsuke Hattori (20 patents)
- Hideki Nukada (30 patents)
US Patent 5619234 · Granted Apr 8, 1997