Assignee
Inventors
- Nobuyuki Mizushima (30 patents)
- Takao Kitada (1 patents)
- Ikunobu Usui (1 patents)
- Shinjiro Ejima (1 patents)
- Yasunori Ito (1 patents)
- Shinichi Hamabuti (1 patents)
- Hideki Hirasawa (1 patents)
US Patent 5988817 · Granted Nov 23, 1999