Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7600938 | Refill for correction pen and refill unit | Kyoko Kobayashi, Makoto Ono, Akira Fukai, Takao Koyama, Hitoshi Nakamura +1 more | 2009-10-13 |
| 7417080 | Oil-based ink composition and writing instrument using the same | Masanao Yano, Yoshihito Fujiwara, Yuji Omori, Naoto Yokokawa | 2008-08-26 |
| 6435751 | Click type writing implement | Makoto Ono, Hitoshi Nakamura, Tamotsu Eguchi, Seiichi Kobayashi | 2002-08-20 |
| 5957609 | Applicator | Masaaki Morita, Yasuyuki Iwase, Atsunori Satake, Masao Hashi | 1999-09-28 |