Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6225130 | Method of separating serum from whole blood | Masao Kitajima, Shigeru Tezuka | 2001-05-01 |
| 6170671 | Blood filter unit | Masao Kitajima, Kenichiro Yazawa, Shigeru Tezuka, Fumio Sugaya, Kiyotaka Fujiwara | 2001-01-09 |
| 5996811 | Plasma collecting device | Masao Kitajima | 1999-12-07 |
| 5979669 | Blood filter unit | Masao Kitajima, Kenichiro Yazawa, Shigeru Tezuka, Fumio Sugaya, Kiyotaka Fujiwara | 1999-11-09 |