Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33108 | Method for preparing a printed circuit board | Kanji Nishijima, Mamoru Seio | 1989-11-07 |
| 4869995 | Positive type photosensitive resinous composition | Masamitsu Shirai, Masahiro Tsunooka, Makoto Tanaka, Kanji Nishijima | 1989-09-26 |
| 4853092 | Production of multicolor display | Akira Matsumura, Yasuo Nozaki | 1989-08-01 |
| 4837046 | Method for forming ferrite film | Masao Oishi, Takao Saito, Masanori Abe, Yutaka Tamaura | 1989-06-06 |
| 4816364 | Magnetic carrier particles for electrophotographic developer having plated layer of iron oxide | Masao Oishi, Takao Saito, Kouichi Nagata, Eio Hisajima | 1989-03-28 |
| 4816365 | Electrostatic recording dry toner | — | 1989-03-28 |