Top Inventors at Ultramemory All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Takao Adachi | 8 |
| 2 | Naoki Ogawa | 4 |
| 3 | Yasutoshi Yamada | 4 |
| #4 | Fumitake OKUTSU | 3 |
| #5 | Kazuo Yamaguchi | 3 |
| #6 | Ryuji Takishita | 3 |
| #7 | Toshitugu Ueda | 3 |
| #8 | Kouji Uemura | 2 |
| #9 | Yuji Motoyama | 2 |
| #10 | Hideyuki Yoko | 1 |
| #11 | Kazuhiko Kajigaya | 1 |
| #12 | Masatoshi Hasegawa | 1 |
| #13 | Motoaki Saito | 1 |
| #14 | Shigeru Nakahara | 1 |
| #15 | Akihiko Takizawa | 1 |