Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5850837 | Device for correcting an ingrown nail | Kaisuke Shiroyama, Tatsuhiko Ueki | 1998-12-22 |
| 5174077 | Fire protecting structure of channel portion of plastic piping in a fire partition | — | 1992-12-29 |
| 4901488 | Fire/smoke protection structure for a plastic pipe or cable channel portion in a floor or wall | Tadashi Naruse | 1990-02-20 |