Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6406626 | Composite semipermeable membrane, processfor producing the same, and method of purifying water with the same | Yasushi Tateishi, Yoshinari Fusaoka | 2002-06-18 |
| 5171738 | Method of treating malignant tumors | Masashi Kodama, Yutaka Katayama, by Shigemasa Katayama, heir, by Nobuko Katayama, heir, by Yoshimasa Katayama, heir +2 more | 1992-12-15 |