Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6588963 | Collector type writing instrument | Yojiro Sano | 2003-07-08 |
| 6435747 | Double ended direct-feed type writing implement | Hiroaki Koyama, Takeshi Kobayashi, Yojiro Sano, Yosuke Mito | 2002-08-20 |
| 6398442 | Writing instrument | — | 2002-06-04 |
| 6382862 | Application liquid reservoir | Sakae Hayao | 2002-05-07 |
| 6371676 | Collector for a writing implement | Yojiro Sano | 2002-04-16 |
| 6364462 | Image recording method and image recording apparatus permitting good picture quality to be provided | Tohru Okuda, Shigeaki Kakiwaki | 2002-04-02 |
| 6340261 | Ball-point pen | — | 2002-01-22 |
| 6340259 | Direct-feed type writing implement | Yosuke Mito | 2002-01-22 |
| 6302610 | Direct-feed type writing implement | Yosuke Mito | 2001-10-16 |
| 6275666 | Developing device and image formation apparatus | Shigeru Nishio, Hiroyuki Hirakawa | 2001-08-14 |
| 6261019 | Ball point pen | — | 2001-07-17 |
| 6161977 | Point assembly of a ball-point pen | — | 2000-12-19 |
| 6132124 | Ink follower for aqueous ballpoint pen using gel-like material and solid piece | Norio Ogura, Katsuhiko Shiraishi | 2000-10-17 |
| 6082920 | Ball-point pen | — | 2000-07-04 |
| 5929135 | Low-viscosity aqueous ink for a ball-point pen and a ball-point pen | Eiji Wasai | 1999-07-27 |
| 5915866 | Clicking-type ball point pen | — | 1999-06-29 |
| 5915871 | Ball-point pen cap | Seiichi Kobayashi, Hiroaki Koyama, Toru Kitao | 1999-06-29 |
| 5876142 | Ball-point pen | — | 1999-03-02 |
| 5871296 | Clicking-type writing implement | Hiroaki Koyama | 1999-02-16 |
| 5867760 | Transfer device with an anisotropin conductive layer | Tetsunori Mitsuoka, Taisuke Kamimura, Atsushi Inoue, Keiji Yasuda | 1999-02-02 |
| 5711626 | Ball-point pen with back flow stop | Seiichi Kobayashi, Hiroaki Koyama, Toru Kitao | 1998-01-27 |
| 5709493 | Ballpoint pen having a backflow preventing mechanism | Seiichi Kobayashi | 1998-01-20 |
| 5655847 | Ball-point pen | Seiichi Kobayashi | 1997-08-12 |
| 5521383 | Corona discharge device | Toshiaki Kagawa, Syogo Yokota, Hiroyuki Sawai, Toshihiro Tamura, Hiroshi Ishii | 1996-05-28 |