Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859563 | Positive photoresist composition | Tameichi Ochiai, Yasuhiro Kameyama | 1989-08-22 |
| 4840640 | Polarizing film: polymer film base containing substituted anthraquinone dichroic dye | Tetsuo Ozawa, Seigo Okumura, Hidetoshi Urashima | 1989-06-20 |
| 4841037 | Amino sulfonaphtholtrisazo compounds and recording liquids containing the same | Tokuya Ohta, Masatsune Kobayashi, Yuko Suga, Hiroshi Takimoto, Tomio Yoneyama | 1989-06-20 |
| 4841057 | Cyclic imido anthraquinone compounds | Tetsuo Ozawa, Seigo Okumura, Shinji Kubo | 1989-06-20 |