Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6770688 | Water-based ballpoint ink composition | — | 2004-08-03 |
| 6613135 | Pseudo-plastic water based ink for ballpoint pen | Shigeru Miyazaki, Yoji Takeuchi | 2003-09-02 |
| 6599352 | Water-based ink composition for writing instrument | Katsuhiko Shiraishi, Yoji Takeuchi, Tadashi Kamagata | 2003-07-29 |
| 6554890 | Water based ink composition for writing instrument | Tadashi Kamagata | 2003-04-29 |
| 6492435 | Water based white color tone pigment ink for ball point pen | Miki Shinozuka, Tadashi Kamagata | 2002-12-10 |
| 6491747 | Water based ink composition for writing instrument | Tadashi Kamagata | 2002-12-10 |
| 6471759 | Water based ink composition for writing instrument | Tadashi Kamagata | 2002-10-29 |
| 6451099 | Water based ink composition for ball point pen | Tadashi Kamagata, Miki Shinozuka | 2002-09-17 |
| 6423127 | Pseudo-plastic water base ink for ball point pen | Shigeru Miyazaki, Yoji Takeuchi | 2002-07-23 |
| 6390710 | Aqueous gel ink-filled ball point pen | — | 2002-05-21 |
| 6312510 | Water-base white pigment ink for ballpoints | Tadashi Kamagata, Miki Shinozuka | 2001-11-06 |
| 6264729 | Water based ink composition for writing instrument | Shigeru Miyazaki, Yoji Takeuchi | 2001-07-24 |
| 6261351 | Water based ink for ball point pen | Shigeru Miyazaki, Yoji Takeuchi | 2001-07-17 |
| 6215527 | Video signal contour correcting circuit | Hiroshige Okamoto, Yoko Takahashi, Atsuko Tsukimura | 2001-04-10 |
| 6176910 | Pseudoplastic water based ink for ballpoint pen | Shigeru Miyazaki, Yoji Takeuchi | 2001-01-23 |
| 6120590 | Water-base ink having metallic lustrous color for ballpoint pen | Kiyoshi Iwamoto | 2000-09-19 |
| 6084725 | Noncircular lens positioning structure and its method | Tamotsu Kume, Hideki Nagata | 2000-07-04 |
| 6075660 | Noncircular lens positioning structure and its method | Tamotsu Kume, Hideki Nagata | 2000-06-13 |
| 6072641 | Noncircular lens positioning structure and its method | Tamotsu Kume, Hideki Nagata | 2000-06-06 |
| 5674993 | Nucleic acid markers for rice blast resistance genes and rice blast resistance genes isolated by the use of these markers | Shinji Kawasaki, Masaya Satoh, Naoki Katsura, Ikuo Andoh | 1997-10-07 |