Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829983 | System for carrying out educational management | Kozaburo Koyama, Isao Honda, Tatsuo Kato, Takasi Ishikawa | 1998-11-03 |
TH
Takayuki Hiraga
Overall (All Time): #3,701,493 of 4,157,543Top 90%
1
Patents All Time