Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588414 | Countercurrent, cooling crystallization and purification method for multi-component molten mixture | Keizo Takegami, Minoru Morita, Koji Miwa | 1986-05-13 |
| 4383121 | Process for purifying monochloroacetic acid | Ryoji Sugamiya, Keizo Takegami, Koji Miwa, Minoru Morita | 1983-05-10 |