Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5904432 | Ballpoint pen tip, manufacturing method therefor, and ballpoint pen using the same | Masashi Ando, Nobuo Sekine, Masahiro Kondo, Hideaki Asami | 1999-05-18 |
| 5899625 | Ballpoint pen tip | Masashi Ando, Nobuo Sekine, Masahiro Kondo, Hideaki Asami | 1999-05-04 |
| 5466283 | Aqueous ink composition for writing instrument | Masahiro Kondo | 1995-11-14 |