Assignee
Inventors
- Masashi Miyazawa (4 patents)
- Toyokazu Kaneko (8 patents)
- Tetsuya Kaneko (215 patents)
- Kenich Yarita (1 patents)
- Shigenori Mori (2 patents)
- Kinzo Iitani (3 patents)
- Masaki Yamamoto (3 patents)
US Patent 4997754 · Granted Mar 5, 1991