Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9233573 | Conical nib and writing instrument using the same | — | 2016-01-12 |
| 8801314 | Conical NIB and writing instrument using the same | — | 2014-08-12 |
| D692055 | Pen nib | — | 2013-10-22 |
| D690363 | Pen nib | — | 2013-09-24 |
| D688306 | Pen nib | — | 2013-08-20 |
| D686282 | Pen nib | — | 2013-07-16 |
| 8475071 | Conical nib and writing instrument incorporating the same | — | 2013-07-02 |
| 6652177 | Conical nib, method of manufacture of the same, and ceramic composite conical nib | Nobuhiko Shimada | 2003-11-25 |
| 5957610 | Penpoint | — | 1999-09-28 |
| 5902064 | Conical penpoint method of manufacture | — | 1999-05-11 |
| 5587017 | Process and apparatus for producing molten metal coated steel sheets | Takao Hashimoto | 1996-12-24 |
| D329660 | Writing instrument | — | 1992-09-22 |
| 5015113 | Multiangular pen | — | 1991-05-14 |
| 4986684 | Multiangular pen | — | 1991-01-22 |
| 4986686 | Multiangular pen | — | 1991-01-22 |
| 4386867 | Multangular pen nib construction | — | 1983-06-07 |