Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D470912 | Water filter housing | Kazunobu Nakamura | 2003-02-25 |
| D467653 | Air filter housing | Robin Scott, Kazunobu Nakamura | 2002-12-24 |
| 6361587 | Vacuum cleaner | Dean R. Rohn, Steven R. Selewski | 2002-03-26 |
| 6174350 | Vacuum cleaner | Dean R. Rohn, Steven R. Selewski | 2001-01-16 |
| D417254 | Water filter housing | Kazunobu Nakamura | 1999-11-30 |