Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9266379 | Thermochromic writing instrument | Yoshinori Imamura, Masashi Ando | 2016-02-23 |
| 8322937 | Thermochromic writing instrument | Yoshinori Imamura, Masashi Ando | 2012-12-04 |
| 6076987 | Ballpoint pen and cap therefor | Takehiko Yokosuka, Masashi Andoh, Yoshiaki Okawara | 2000-06-20 |
| D426573 | Ball-point pen | Kazuo Iwase, Mikiya Ido | 2000-06-13 |
| D426263 | Ball-point pen | Kazuo Iwase, Mikiya Ido | 2000-06-06 |
| 5904432 | Ballpoint pen tip, manufacturing method therefor, and ballpoint pen using the same | Masashi Ando, Masahiro Kondo, Hideaki Asami, Nobuo Matsubara | 1999-05-18 |
| 5899625 | Ballpoint pen tip | Masashi Ando, Masahiro Kondo, Hideaki Asami, Nobuo Matsubara | 1999-05-04 |
| D378761 | Ball-point pen | — | 1997-04-08 |
| D363308 | Ball-point pen | — | 1995-10-17 |