Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136970 | Asymmetric dioxazine compounds and method for dyeing or printing fiber materials using the same | Kazufumi Yokogawa, Miyao Takahashi, Shigeru Kawabata, Naoki Harada, Kingo Akahori +2 more | 2000-10-24 |
| 5486607 | Dioxazine blue dye compound having vinylsulfone type fiber reactive groups | Tetsuya Miyamoto, Miyao Takahashi, Naoki Harada, Yutaka Kayane, Takashi Omura | 1996-01-23 |
| 5438137 | Fiber reactive asymmetric dioxazine compounds and their use as fiber reactive dyes | Tetsuya Miyamoto, Miyao Takahashi, Shinei Ikeou, Takashi Omura, Naoki Harada | 1995-08-01 |
| 5068327 | Symmetrical dioxazine compounds and their use as fiber-reactive dyes | Tetsuya Miyamoto, Miyao Takahashi, Shinei Ikeou, Takashi Omura | 1991-11-26 |