Assignee
- Kobe Steel
- Showa Denko K.K.
- Sky Aluminium Co.
- Sumitomo Light Metal Industries
- Nippon Light Metal Company
- Furukawa Electric Co.
- Mitsubishi Aluminum Co.
Inventors
- Masakatsu Yokota (5 patents)
- Kenji Osumi (4 patents)
- Yutaka Nagakura (2 patents)