Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8651762 | Tip unit for liquid applicator and liquid applicator | Sakiko Takahashi | 2014-02-18 |
| 8292534 | Liquid applicator | Hiroshi Inoue | 2012-10-23 |
| 8080098 | Water-based ink composition | Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Hiroyoshi Yamamoto, Kozaburo Fujita +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, Takeshi Omatsu +3 more | 2011-03-29 |
| 7721402 | Method of producing applicator tip | Hiroshi Inoue, Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Takeshi Omatsu +3 more | 2010-05-25 |
| 7538148 | Aqueous ink composition | Hiroshi Inoue, Norimasa Kurihara, Shoko Matsumoto, Kyoko Sano, Takeshi Omatsu +3 more | 2009-05-26 |
| 6706101 | Double-color ink and writing utensil containing the same | Yasuyuki Yoshimura | 2004-03-16 |
| 6422776 | Ball-point pen and a penpoint tip therein | — | 2002-07-23 |
| 6332728 | Ball for ball-point pen | Tadaaki Ito, Atsushi Ito, Hiroyoshi Yamamoto | 2001-12-25 |
| 6299376 | Ball-point pen | — | 2001-10-09 |
| 6283662 | Ink applicator, ink backflow prevention mechanism of ink applicator, and a pen tip | Shigeyasu Inoue, Tatsuya Ozu | 2001-09-04 |
| 5022775 | Writing inplement with magnetic closure | Shigeyasu Inoue, Tatsuya Ozu | 1991-06-11 |