Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8123845 | Water base dual color ink composition and writing utensil using the same | Tomochika Yoshitsugi | 2012-02-28 |
| 8080098 | Water-based ink composition | Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Yasunori Nakatani, Hiroyoshi Yamamoto +4 more | 2011-12-20 |
| 7914222 | Tip unit for liquid applicator, method for producing the same, and liquid applicator having the tip unit | Hiroshi Inoue, Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Shigeki Yoneda +3 more | 2011-03-29 |
| 7905671 | Ink backflow preventive for water-based ball-point pens | Hirokazu Matsuda, Hiroshi Inoue | 2011-03-15 |
| 7776941 | Oil-based ink composition for writing instruments | Shigeki Yoneda | 2010-08-17 |
| 7721402 | Method of producing applicator tip | Hiroshi Inoue, Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Shigeki Yoneda +3 more | 2010-05-25 |
| 7637680 | Coating tool | Shigeki Yoneda | 2009-12-29 |
| 7541394 | Water base pigment ink composition for inner lead type writing instrument | Kazuhiro Kawauchi | 2009-06-02 |
| 7538148 | Aqueous ink composition | Hiroshi Inoue, Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Shigeki Yoneda +3 more | 2009-05-26 |
| 6659036 | Plasma sterilization indicator | Satoshi Maruyama | 2003-12-09 |
| 6655867 | Oily ink for writing instrument | Hiroshi Inoue | 2003-12-02 |
| 6406204 | Oily ink for writing instrument | Hiroshi Inoue | 2002-06-18 |
| 6336964 | Ozone indicator and ozone sensor ink | Hiroshi Inoue | 2002-01-08 |
| 6117685 | Ozone indicator and ozone detecting ink | Hiroshi Inoue | 2000-09-12 |