Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8430591 | Ballpoint pen tip and ballpoint pen | Keishi Okamoto, Tatsuyuki Nakatani, Yuki Nitta, Kunihiro Toyota, Kouichi Takayama +2 more | 2013-04-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8430591 | Ballpoint pen tip and ballpoint pen | Keishi Okamoto, Tatsuyuki Nakatani, Yuki Nitta, Kunihiro Toyota, Kouichi Takayama +2 more | 2013-04-30 |