Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D638909 | Water purifier | Tamotsu Matsumoto, Makiko Kida, Masaru Araki, Hiroki Sakakibara, Hatsumi Takeda | 2011-05-31 |
| 5664999 | Picture amusement apparatus | — | 1997-09-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D638909 | Water purifier | Tamotsu Matsumoto, Makiko Kida, Masaru Araki, Hiroki Sakakibara, Hatsumi Takeda | 2011-05-31 |
| 5664999 | Picture amusement apparatus | — | 1997-09-09 |