Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831875 | Apparatus for ultrasonically detecting position of web edge and method of doing the same | Hiroaki Arai | 2004-12-14 |
| 4355970 | Pressure responsive safety valve for gas burner | Kouichirou Kitagawa | 1982-10-26 |