Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7070352 | Writing implement | Hisashi Iida, Shigeru Okumura, Kazuaki Matsumoto, Seiichi Kobayashi, Takeshi Kobayashi +1 more | 2006-07-04 |
| 6435747 | Double ended direct-feed type writing implement | Kazuhiko Furukawa, Hiroaki Koyama, Takeshi Kobayashi, Yojiro Sano | 2002-08-20 |
| 6340259 | Direct-feed type writing implement | Kazuhiko Furukawa | 2002-01-22 |
| 6302610 | Direct-feed type writing implement | Kazuhiko Furukawa | 2001-10-16 |