Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6478496 | Ink follower for writing tool | Kazuhiro Yoshii, Seishi Izumi | 2002-11-12 |
| 6479568 | Non-aqueous ball point pen ink and ball point pen using the ink | Takeshi Fujii, Kahori Funabashi | 2002-11-12 |