Assignee
Inventors
- Minoru Maeda (79 patents)
- Isao Kawashima (45 patents)
- Tomomi Shoji (3 patents)
- Tsutomu Matsuzaki (27 patents)
- Naohiro Takahashi (24 patents)
- Masashi Ishii (16 patents)
- Tsutomu Ao (4 patents)
US Patent 6231125 · Granted May 15, 2001