Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D562895 | Ballpoint pen | — | 2008-02-26 |
| D542350 | Ballpoint pen | — | 2007-05-08 |
| D535698 | Cap for writing instrument | — | 2007-01-23 |
| D522580 | Marking pen | — | 2006-06-06 |
| D520059 | Mechanical pencil | — | 2006-05-02 |
| D512099 | Mechanical pencil | — | 2005-11-29 |
| D510599 | Cap for writing instrument | — | 2005-10-11 |
| D507811 | Ball point pen | Keitaro Tsuboki | 2005-07-26 |
| D504465 | Cap for a writing instrument | Keitaro Tsuboki | 2005-04-26 |
| 6868210 | Optical waveguide and their application of the optical communication system | Makoto Takahashi, Tatemi Ido, Hirohisa Sano | 2005-03-15 |
| D499137 | Marking pen | — | 2004-11-30 |