Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7074268 | Pigment composition and printing ink containing the same | Ippei Imagawa, Ataru Chiba | 2006-07-11 |
| 5704968 | Stamp ink and stamp ink impregnation pad for stencil printing | Hiroshi Taira, Minoru Yamamoto, Hiroshi Takami, Hideki Hasegawa | 1998-01-06 |
| 5051131 | Azo dispersing agents and azo pigment compositions | Kenzi Kitamura | 1991-09-24 |