Assignee
Inventors
- Kunio Yoshihara (35 patents)
- Hiroshi Sumio (19 patents)
- Masanori Sakai (166 patents)
- Hidenori Ozaki (20 patents)
- Ken Kuroda (13 patents)
- Takehito Utsunomiya (28 patents)
- Hiroyuki Yaguchi (56 patents)
- Michiko Hirayu (4 patents)
US Patent 6031632 · Granted Feb 29, 2000