Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D829282 | Mechanical pencil | — | 2018-09-25 |
| 8970560 | Writing instrument | Sachio Arai, Hidehei Kageyama | 2015-03-03 |
| D650858 | Writing instrument | — | 2011-12-20 |
| 7878726 | Stick-shaped material propelling container | Hidehei Kageyama | 2011-02-01 |
| D621446 | Mechanical pencil with a lead tank | — | 2010-08-10 |
| 7708486 | Airtight cap structure | — | 2010-05-04 |
| D612428 | Cap for writing instrument | — | 2010-03-23 |
| D611989 | Mechanical pencil with a lead tank | — | 2010-03-16 |
| D602089 | Cap for a writing instrument | — | 2009-10-13 |
| D594902 | Cap for a writing instrument | — | 2009-06-23 |
| D589556 | Housing for writing instrument or eraser | — | 2009-03-31 |
| D583869 | Cap for writing instrument | — | 2008-12-30 |
| 7137527 | Container | Hidehei Kageyama | 2006-11-21 |
| 7014380 | Composite holding tool | Masahiko Ono, Kazuya Watanabe, Tadao Odaka | 2006-03-21 |
| D500519 | Writing instrument | — | 2005-01-04 |
| D495745 | Cap for writing instrument | — | 2004-09-07 |
| D489407 | Writing instrument | — | 2004-05-04 |
| D488188 | Writing instrument | — | 2004-04-06 |
| D487775 | Writing instrument | — | 2004-03-23 |
| D487773 | Writing instrument | — | 2004-03-23 |
| D487774 | Writing instrument | — | 2004-03-23 |
| D487776 | Writing instrument cap | — | 2004-03-23 |
| 6702158 | Knocking-type liquid container | Hidehei Kageyama, Yoshio Noguchi, Tadao Odaka | 2004-03-09 |
| D480758 | Clip of writing instrument | — | 2003-10-14 |
| D463822 | Writing instrument | — | 2002-10-01 |