Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7927769 | Method for fabricating EUVL mask | Osamu Takaoka, Tomokazu Kozakai | 2011-04-19 |
| 7576340 | Focused ion beam processing method | Yasuhiko Sugiyama, Tomokazu Kozakai | 2009-08-18 |
| 7488961 | Charged particle beam irradiation method and charged particle beam apparatus | Masashi Muramatsu, Tomokazu Kozakai | 2009-02-10 |
| 7485880 | Charged particle beam scan and irradiation method, charged particle beam apparatus, workpiece observation method and workpiece processing method | Tomokazu Kozakai, Masashi Muramatsu | 2009-02-03 |
| 7375352 | Photomask defect correction method employing a combined device of a focused electron beam device and an atomic force microscope | Osamu Takaoka | 2008-05-20 |
| 7018683 | Electron beam processing method | Osamu Takaoka | 2006-03-28 |
| 6891171 | Method for repairing a phase shift mask and a focused ion beam apparatus for carrying out method | Yoshihiro Koyama | 2005-05-10 |
| 6780551 | Charged particle processing for forming pattern boundaries at a uniform thickness | Tomokazu Kozakai | 2004-08-24 |
| 6303930 | Coordinating optical type observing apparatus and laser marking method | — | 2001-10-16 |
| 5770963 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Yasushi Kasa, Kiyoshi Itano +2 more | 1998-06-23 |
| 5631597 | Negative voltage circuit for a flash memory | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-05-20 |
| 5608670 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-03-04 |
| 5592419 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-01-07 |
| 5576637 | XOR CMOS logic gate | Takao Akaogi, Hiromi Kawashima, Tetsuji Takeguchi, Yasushi Kasa, Kiyoshi Itano +2 more | 1996-11-19 |
| 5249156 | Semiconductor memory device having non-volatile and volatile memory cells | Hiromi Kawashima | 1993-09-28 |
| 5109159 | X-ray image sensor | Hiroyuki Suzuki | 1992-04-28 |
| 5079423 | X-ray image sensor | Hiroyuki Suzuki | 1992-01-07 |
| 4937830 | Semiconductor memory device having function of checking and correcting error of read-out data | Hiromi Kawashima | 1990-06-26 |