Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9200171 | AZO compound and ink containing the compound | Shoko Ichinosawa, Yuki Tanaka, Hiroyuki Aikyo, Mio Ishida | 2015-12-01 |
| 8999050 | Ink containing anthraquinone based dye, dye used in the ink, and display | Mio Ishida, Yasushi Shiga, Masami Kadowaki | 2015-04-07 |
| 8747537 | Ink containing heterocyclic azo dye, and dye for use in said ink | Yasushi Shiga, Shoko Ichinosawa, Mio Ishida | 2014-06-10 |