Assignee
- Director-General Of Agency Of Industrial Science And Technology
- Taihei Chemical Industrial Co.
- Hanano Commercial Co.
Inventors
- Kiyohisa Eguchi (5 patents)
- Norio Kitamura (6 patents)
- Terumasa Okamura (3 patents)
- Jouji Ohta (1 patents)
US Patent 4834891 · Granted May 30, 1989