Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762694 | Ink composition for marking pen | Masakazu Yokoi, Hirofumi Yamasaki | 1998-06-09 |
| 5716217 | Water base ink compositions for neon boards | Kiyotaka Imagawa | 1998-02-10 |
| 5510397 | Aqueous pigment ink composition for writing utensils | Hiroaki Ueda | 1996-04-23 |
| 5106881 | Water base pigment ink compositions for use in marking pens | Hiroshi Inoue, Wataru Yokono | 1992-04-21 |
| 5009536 | Water base pigment ink compositions for use in marking pens | Hiroshi Inoue, Wataru Yokono | 1991-04-23 |
| 4942185 | Water base pigment ink compositions for use in marking pens | Hiroshi Inoue, Wataru Yokono | 1990-07-17 |
| 4829108 | Solid coating compositions | Shizuo Maruyama, Hiromasa Sugimoto | 1989-05-09 |