Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5855914 | Granules having core and their production | Hiroyoshi Koyama, Shin-ichiro Hirai | 1999-01-05 |
| 5726180 | Stabilized solid pharmaceutical preparation and method of producing the same | Masahiko Kurihara, Kou Moriyama, Mitsutaka Isobe, Kenichiro Kiyoshima | 1998-03-10 |
| 5629316 | Stabilized solid pharmaceutical preparation and method of producing the same | Masahiko Kurihara, Kou Moriyama, Mitsutaka Isobe, Kenichiro Kiyoshima | 1997-05-13 |
| 5194464 | Enteric film and preparatoin thereof | Hiroyoshi Koyama, Toshio Kashihara, Shin-ichiro Hirai | 1993-03-16 |
| 4623039 | Spring drive | — | 1986-11-18 |
| 4568308 | Two-speed action spring drive | — | 1986-02-04 |