Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801386 | Process of using a porous water-treating material | Shuichi Sugimori, Tomihiko Kawamura, Tadashi Matsuda, Sumito Saiki, Hideaki Habara | 1989-01-31 |
SD
Shintaro Nakano, deceased
Overall (1989): #57,189 of 140,708Top 45%
1
Patents 1989