Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5518825 | Organic electroluminescent device | Ryuji Murayama, Masaaki Ikeda | 1996-05-21 |
| 5389486 | Electrophotographic toner | Tadayuki Kiyoyanagi, Junko Yoshioka, Masaharu Nomura | 1995-02-14 |
| 5382490 | Electrophotographic toner | Junko Yamamoto, Tadayuki Kiyoyanagi, Masaharu Nomura | 1995-01-17 |
| 5225305 | Electrophotographic toner | Tadayuki Kiyoyanagi, Junko Yamamoto | 1993-07-06 |
| 4771132 | Cuprophthalocyanine type compounds | Ryuzo Orita, Masayoshi Ojima | 1988-09-13 |