Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820836 | Fiberboard splice apparatus, corrugate machine and fiberboard feed method | Hiroshi Sato | 2004-11-23 |
| 5611887 | Single facer and corrugating roll for the same | Hiroyuki Takenaka, Takayuki Miyake | 1997-03-18 |
| 5150514 | Corrugating roll unit exchanging apparatus for a single facer | Yukuharu Seki, Haruo Ohkawa | 1992-09-29 |
| 5116448 | Single facer capable of maintaining a constant roll gap | Kimio Murayama, Yukuharu Seki | 1992-05-26 |
| 4773963 | Single facer with replacable rollers | Yukuharu Seki | 1988-09-27 |
| 4644896 | Lower roll apparatus for single facer | Tadashi Hirakawa, Haruo Okawa | 1987-02-24 |
| 4631109 | Single facer | Tadashi Hirakawa, Kiyomitsu Yoshikawa, Shigenari Yoshioka | 1986-12-23 |
| 4627831 | Single facer | Tadashi Hirakawa, Kiyomitsu Yoshikawa, Shigenari Yoshioka | 1986-12-09 |
| 4481066 | Single facer | Tadashi Hirakawa | 1984-11-06 |
| 4398328 | Rolls for single facer | Hiroyuki Takenaka, Keiichi Katayama, Kouichi Tokiyasu, Tadashi Hirakawa | 1983-08-16 |
| 4337884 | Single facer | Tadashi Hirakawa, Hiroyuki Takenaka, Keiichi Katayama | 1982-07-06 |
| 4316761 | Single facer | Tadashi Hirakawa, Hiroyuki Takenaka, Keiichi Katayama | 1982-02-23 |