Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5882160 | Loosening and dislodging preventing screw | — | 1999-03-16 |
| 5876168 | Thread forms for preventing disengagement between male and female screwheads | — | 1999-03-02 |
| 5765980 | Loosening preventive screw | Katsunori Sudo | 1998-06-16 |
| 5672037 | Loosening and dislodging preventing screw | — | 1997-09-30 |
| D285651 | Bolt | Yasuo Suzuki | 1986-09-16 |
| 4299520 | Drive nut | — | 1981-11-10 |