Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6485700 | Process for producing free hydroxylamine aqueous solution | Kumiko Bansho | 2002-11-26 |
| 6390707 | Knocking writing utensil | Hidehei Kageyama | 2002-05-21 |
| 6382859 | Double chuck type mechanical pencil and internal writing mechanism thereof | Hidehei Kageyama | 2002-05-07 |