Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6055702 | Vacuum cleaner | Jun Yoshikawa | 2000-05-02 |
| 6029309 | Vacuum cleaner with dust bag fill detector | — | 2000-02-29 |
| 6023814 | Vacuum cleaner | — | 2000-02-15 |
| 5819367 | Vacuum cleaner with optical sensor | — | 1998-10-13 |
| 5815884 | Dust indication system for vacuum cleaner | Jun Yoshikawa | 1998-10-06 |
| 4448809 | Method of silver plating stainless steel vacuum bottle surfaces | Kiyoshi Nagai, Hiroshi Shinohara | 1984-05-15 |