Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6503966 | Gelled non-aqueous ball point pen ink for forming drawn line approximate to that of aqueous ball point pen and ball point using the ink | Takeshi Fujii, Kahori Funabashi | 2003-01-07 |
| 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 |
| 6114412 | Water-based ink with metallic gloss for direct fill in ball-point pen | Hironobu Kanbayashi | 2000-09-05 |
| 6083311 | Water based ink having metallic luster adapted for direct-filling in ball-point pen | Hironobu Kanbayashi | 2000-07-04 |
| 5984559 | Ballpoint pen refill and fabrication method thereof | Toshikazu Shiobara, Kazuhiko Sasaki | 1999-11-16 |
| 5945484 | Water-in-oil type disperse ink | — | 1999-08-31 |
| 5925175 | Direct filling ink capable of being used for a ballpoint pen containing an aqueous ink composition | Kazuhiro Yoshii, Takashi Ohno | 1999-07-20 |
| 5767172 | Water base ink composition directly fed to a pen body of a ball-point pen | — | 1998-06-16 |