Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7246438 | Method for producing a heat exchanger with a louvered fin | Kenji Tochigi | 2007-07-24 |
| 7032487 | Corrugated fin cutting device and cutting method | Kenji Tochigi, Akira Yoshikawa | 2006-04-25 |
| 6968254 | Feedback controlled tension applying system | Kenji Tochigi, Hirokazu Yaezawa | 2005-11-22 |
| 6571473 | Method and system for manufacturing refrigerant tubes for condensers | Kazuhiro Asano, Toru Okabe | 2003-06-03 |
| 6564607 | Method and device for cutting a sheet material into strips and a corrugated-fin strips forming apparatus using the device | Kenji Tochigi | 2003-05-20 |
| 6430983 | Method for manufacturing corrugated fin | Masamitsu Takahashi | 2002-08-13 |
| 6398482 | Workpiece handling device | Kazuhiro Asano, Toru Okabe | 2002-06-04 |
| 6276513 | Workpiece handling device | Kazuhiro Asano, Toru Okabe | 2001-08-21 |
| 5522245 | Device for producing metal rings | Mutuo Yomoda | 1996-06-04 |