Assignee
Inventors
- Hisao Takehara (4 patents)
- Yoshihiro Nakayama (21 patents)
- Ryoichi Shimizugawa (4 patents)
- Tsutomu Kishikawa (2 patents)
- Takumi Murai (2 patents)
- Fumiya Takahashi (6 patents)
- Koh Takahashi (7 patents)
US Patent 5746902 · Granted May 5, 1998