Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222392 | Airflow system for bagless vacuum cleaner | Michael J. McCormick, J. Hitzelberger, Tamaki Nishikori, Hiroshi Nishimura, Eric J. Streciwilk | 2007-05-29 |
| 7070636 | Cyclonic vacuum cleaner with filter and filter sweeper | Michael J. McCormick, J. Hitzelberger, Tamaki Nishikori, Richard E. Downey | 2006-07-04 |
| 6030465 | Extractor with twin, counterrotating agitators | Toshiyuki Yoshida | 2000-02-29 |