Assignee
Inventors
- Kanji Emoto (2 patents)
- Masayuki Onishi (42 patents)
- Hirosuke Yamada (36 patents)
- Katsuhisa Hirayama (3 patents)
- Hideshi Ohzu (3 patents)
- Masakatsu Ogawa (2 patents)
- Yasuo Masuda (20 patents)
US Patent 4398948 · Granted Aug 16, 1983