Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D941921 | Fountain pen | — | 2022-01-25 |
| 9731252 | Aeration nozzle, and blockage removal method for said aeration nozzle | — | 2017-08-15 |
| D730486 | Aeration nozzle | — | 2015-05-26 |
| D728689 | Ballpoint pen | — | 2015-05-05 |
| D712966 | Ballpoint pen | — | 2014-09-09 |
| D701573 | Ballpoint pen | — | 2014-03-25 |
| D650441 | Ballpoint pen | — | 2011-12-13 |
| D626995 | Ballpoint pen | — | 2010-11-09 |
| 7794164 | Layered gripping member for a writing instrument | Yoshihiro Kobayashi | 2010-09-14 |
| D605951 | Ink bottle | — | 2009-12-15 |
| D598496 | Fountain pen | — | 2009-08-18 |
| D595352 | Ballpoint pen | — | 2009-06-30 |
| D589091 | Cap of pen | — | 2009-03-24 |
| D562389 | Ballpoint pen | — | 2008-02-19 |
| D559317 | Ballpoint pen | — | 2008-01-08 |
| 7039984 | Handle for tooth cleaning member | Takayuki Watanabe, Norio Matsumoto | 2006-05-09 |
| D495744 | Ball-point pen | — | 2004-09-07 |
| D483805 | Cap of pen | — | 2003-12-16 |
| D472928 | Ball-point pen | — | 2003-04-08 |
| D440602 | Mechanical pencil | — | 2001-04-17 |
| 4317466 | Hydraulic drive circuit for load-handling machines | Fuyuki Nagai, Takashi Okuno | 1982-03-02 |