Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6478496 | Ink follower for writing tool | Kazuhiro Yoshii, Teruaki Fukasawa | 2002-11-12 |
| 6454481 | Ink follower in conjunction with ink in a writing instrument and writing instrument containing the same | — | 2002-09-24 |