Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634692 | Main-ancillary tunnel excavator | Toshihiko Bessho, Yoshihiro Uchiyama, Toshihumi Inoue, Masahiko Sugiyama | 1997-06-03 |
| 5593774 | Insulating film with improved punching characteristics and lead frame using the same | Toshikatsu Hiroe, Noboru Imai, Hiroyuki Takasaka, Toshio Kawamura | 1997-01-14 |