Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D667882 | Ballpoint pen | Ayana Uchiyama | 2012-09-25 |
| D616497 | Retractable pen | — | 2010-05-25 |
| D569430 | Ballpoint pen | Kosuke Kondo, Yoshitoshi Aizawa, Hiroyasu Okuo, Hiroaki Yamada, So Satoh +1 more | 2008-05-20 |
| D566177 | Ballpoint pen | Keiko Togawa | 2008-04-08 |
| D512458 | Writing instrument | — | 2005-12-06 |