Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9573410 | Writing utensil | Shigeo Abe, Yukihiro Tsukioka, Shouhei Moriyasu | 2017-02-21 |
| D569430 | Ballpoint pen | Masanao Shiina, Kosuke Kondo, Hiroyasu Okuo, Hiroaki Yamada, So Satoh +1 more | 2008-05-20 |