Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D952277 | Hand-held scrubbing tool | — | 2022-05-17 |
| 9750385 | Handheld scrubbing tool | — | 2017-09-05 |
| 5492621 | Sewage water and solids treatment and disposal system | — | 1996-02-20 |
| 4920236 | Sealing cable junctions | Minoru Makiyo, Shigenori Goto, Hiroshi Yokosuka, Philip Wade | 1990-04-24 |