Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6071611 | Sheet for providing ink-receiving layer | Tetsuzi Ohta, Takayuki Aikawa | 2000-06-06 |
| 5891825 | Recording material | Seiji Ushio, Takayuki Aikawa, Tetsuzi Ohta | 1999-04-06 |