Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8128304 | Direct-fluid-supply writing implement | Tetsuhiro Kurita | 2012-03-06 |
| 7578631 | Direct-fluid-supply writing implement | Tetsuhiro Kurita | 2009-08-25 |
| 6623344 | Wafer polishing apparatus | — | 2003-09-23 |
| 6547650 | Polishing apparatus | — | 2003-04-15 |
| 6494768 | Wafer polishing apparatus | — | 2002-12-17 |
| 6402589 | Wafer grinder and method of detecting grinding amount | Minoru Numoto, Kenji Sakai | 2002-06-11 |
| 6354914 | Wafer polishing apparatus | Minoru Numoto, Kenji Sakai, Manabu Satoh | 2002-03-12 |
| 6346037 | Wafer polishing machine | Minoru Numoto, Kenji Sakai | 2002-02-12 |
| 6302762 | Wafer polishing apparatus | Minoru Numoto, Kenji Sakai, Manabu Satoh | 2001-10-16 |
| 6296555 | Wafer machining apparatus | Minoru Numoto | 2001-10-02 |
| 6203414 | Polishing apparatus | Minoru Numoto, Kenji Sakai, Hisashi Terashita, Manabu Satoh | 2001-03-20 |
| 6196905 | Wafer polishing apparatus with retainer ring | — | 2001-03-06 |
| 6080049 | Wafer polishing apparatus | Minoru Numoto, Hisashi Terashita | 2000-06-27 |
| 6059636 | Wafer polishing apparatus | Minoru Numoto, Kenji Sakai, Manabu Satoh | 2000-05-09 |
| 6033292 | Wafer polishing apparatus with retainer ring | — | 2000-03-07 |
| 6010269 | Writing implement | Takehiko Yokosuka, Hideyuki Tanaka | 2000-01-04 |
| 5961378 | Polishing apparatus | — | 1999-10-05 |
| 5948206 | Apparatus for determining removed amount of wafer | Minoru Numoto | 1999-09-07 |
| 5931725 | Wafer polishing machine | Masaaki Oguri, Kenji Sakai, Minoru Numoto, Hisashi Terashita | 1999-08-03 |
| 5876272 | Semiconductor wafer polishing machine | Masaaki Oguri, Kenji Sakai | 1999-03-02 |
| 4844642 | Cap for writing equipment | Kenji Sakai, Tadao Iida, Masahisa Maki | 1989-07-04 |
| 4671692 | Writing pen holder with three wicks | — | 1987-06-09 |
| D286547 | Pen | Masashi Koizumi | 1986-11-04 |
| 4496258 | Writing pen with space behind nib | Isao Tanaka | 1985-01-29 |