Issued Patents 2002
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444142 | Method of preparing barium fluoroiodide, iodine-containing barium fluorohalide phosphor, and radiation image conversion panel | Hiroshi Matsumoto, Chiyuki Umemoto | 2002-09-03 |
| 6442355 | Developer density controlling apparatus including target density information detection and toner image density detection | Shigeo Kimura, Koji Masuda, Akihiko Sato, Takao Ogata, Fumitake Hirobe | 2002-08-27 |
| 6437911 | Objective changing-over apparatus | — | 2002-08-20 |
| 6421520 | Developing apparatus having magnetic lower limit domain between repulsion magnetic fields | Koji Masuda, Shigeo Kimura, Takao Ogata | 2002-07-16 |
| 6383412 | Rare earth element-activated, alkaline earth metal fluorohalide based stimulable phosphor, process and apparatus for the preparation thereof, and radiographic image conversion panel | — | 2002-05-07 |
| 6361714 | Method of preparing barium fluorohalide phosphor | Yasuo Iwabuchi, Chiyuki Umemoto, Kenji Takahashi | 2002-03-26 |
| 6353559 | Write circuit for a semiconductor memory device | Akira Yoneyama | 2002-03-05 |