Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140913 | Apparatus and method of assisting visually impaired persons to generate graphical data in a computer | Katsuhiro Yamanaka | 2000-10-31 |
| 5956029 | User interface conversion method and apparatus | Katsuhiro Yamanaka | 1999-09-21 |