Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8701812 | Towing tractor | — | 2014-04-22 |
| 8641065 | Battery-powered towing tractor | — | 2014-02-04 |
| 7939240 | Lithographic printing plate precursor and method of producing printing plate | Akihiro Endo, Sumiaki Yamasaki | 2011-05-10 |
| 6277541 | Photosensitive lithographic printing plate | Shiro Tan, Mitsuhiro Imaizumi, Keiji Akiyama | 2001-08-21 |
| 6114089 | Positive working photosensitive lithographic printing plate | Satoshi Takita, Mitsuhiro Imaizumi, Keiji Akiyama, Shiro Tan | 2000-09-05 |
| 5571658 | Photosensitive plate having a photopolymerizable photosensitive layer and a silicone rubber layer for preparing a lithographic printing plate requiring no fountain solution | Koji Sonokawa | 1996-11-05 |