Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7671219 | Method for manufacturing fullerene derivatives | Yusuke Tajima | 2010-03-02 |
| 6709804 | Printed wiring board and semiconductor device and processes to prepare the same | Yusuke Tajima, Kazuo Takeuchi, Etsu Takeuchi | 2004-03-23 |
| 6528231 | PHOTOSENSITIVE RESIN COMPOSITION, PRINTED WIRING BOARD, SUBSTRATE FOR DISPOSING SEMICONDUCTOR CHIPS, SEMICONDUCTOR DEVICE AND PROCESSES FOR PRODUCING A PRINTED WIRING BOARD, A SUBSTRATE FOR DISPOSING SEMICONDUCTOR CHIPS AND A SEMICONDUCTOR DEVICE | Yusuke Tajima, Kazuo Takeuchi, Etsu Takeuchi | 2003-03-04 |
| 5766833 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Kiyoshi Suematsu, Hiroaki Muratake, Haruhiko Kaji, Naoki Obi, Yasuhiko Kojima | 1998-06-16 |
| 5683854 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Kiyoshi Suematsu, Hiroaki Muratake, Haruhiko Kaji, Naoki Obi, Yasuhiko Kojima | 1997-11-04 |
| 5460919 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Naoki Obi, Yasuhiko Kojima, Jun Takeuchi, Kiyoshi Suematsu | 1995-10-24 |
| 5372911 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Naoki Obi, Yasuhiko Kojima, Jun Takeuchi, Kiyoshi Suematsu | 1994-12-13 |
| 5362621 | Direct positive silver halide photographic material and method for forming high contrast positive image using the same | Naoki Obi, Kiyoshi Suematsu, Yasuhiko Kojima, Masatoshi Katayama | 1994-11-08 |
| 5284733 | High-contrast image forming process | Yasuhiko Kojima, Naoki Obi, Kiyoshi Suematsu | 1994-02-08 |
| 5275915 | Developer for light-sensitive material | Yasuhiko Kojima | 1994-01-04 |
| 5217842 | Superhigh contrast negative image forming process | Yasuhiko Kojima, Naoki Obi | 1993-06-08 |
| 4724196 | Silver halide photographic lith material | Tadao Shoji, Yonosuke Tsuka, Naoki Obi, Yasuhiko Kojima | 1988-02-09 |