Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8200536 | Image display medium and image forming apparatus | Yasuo Yamamoto, Satoshi Hiraoka, Takeshi Matsunaga | 2012-06-12 |
| 7864406 | Display device particles, process for producing the same, image-display medium, and image-forming device | Satoshi Hiraoka, Yasuo Yamamoto | 2011-01-04 |
| 7616373 | Display device particles, process for producing the same, image-display medium, and image-forming device | Satoshi Hiraoka, Yasuo Yamamoto | 2009-11-10 |
| 7326508 | Image forming method | Ryuichiro Maeyama, Tsukasa Matsuda | 2008-02-05 |
| 7321460 | Particle for display device, method for manufacturing particle for display device, image display medium and image forming apparatus | Satoshi Hiraoka, Yasuo Yamamoto | 2008-01-22 |
| 7205709 | Image display medium and image formation device | Yasuo Yamamoto, Satoshi Hiraoka | 2007-04-17 |
| 7023608 | Particle for a display device, image display medium and image forming apparatus | Satoshi Hiraoka, Yasuo Yamamoto | 2006-04-04 |
| 6876486 | Particles for display device, image display medium using the same, and image forming device | Satoshi Hiraoka, Yasuo Yamamoto | 2005-04-05 |
| 6099630 | Ink composition, rewritable display medium and method for displaying images | Takako Kobayashi, Yutaka Sugizaki | 2000-08-08 |
| 5891357 | Optical element and method of manufacturing the same, and macromolecular liquid crystal for an optical element | Ryojiro Akashi, Takashi Uematsu | 1999-04-06 |
| 4767688 | Charge controlling method and developers containing a charge-exchange control agent comprising organic boron compound | Ken Hashimoto, Masayuki Maruta, Yukihiro Ishii | 1988-08-30 |