Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7143948 | Reading method of the two-dimensional bar code | Tsutomu Nakazawa, Kouichi Hamakawa, Youji Takei | 2006-12-05 |
| 7106902 | Personal authentication system and method thereof | Tsutomu Nakazawa, Kouichi Hamakawa, Youji Takei | 2006-09-12 |