Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9183000 | Memory system | Makoto Ichida, Hiroshi Sukegawa | 2015-11-10 |
| 8400833 | Method of evaluating a semiconductor storage device | — | 2013-03-19 |
| 5650961 | Cell characteristic measuring circuit for a nonvolatile semiconductor memory device and cell characteristic measuring method | Toshihiko Himeno | 1997-07-22 |
| 5559736 | Non-volatile semiconductor memory device capable of preventing excessive-writing | Keniti Imamiya, Toshiharu Watanabe, Michiharu Matsui | 1996-09-24 |
| 5515327 | Nonvolatile semiconductor memory device having a small number of internal boosting circuits | Ryouhei Kirisawa, Riichiro Shirota | 1996-05-07 |
| 5350938 | Nonvolatile semiconductor memory circuit with high speed read-out | Junichi Miyamoto | 1994-09-27 |
| 5172196 | Nonvolatile semiconductor memory device | Yoshihisa Mizutani | 1992-12-15 |
| 4845530 | Reduced projection type step- and repeat-exposure apparatus | — | 1989-07-04 |
| 4642881 | Method of manufacturing nonvolatile semiconductor memory device by forming additional impurity doped region under the floating gate | Sigeru Morita, Hiroshi Nozawa | 1987-02-17 |
| 4620361 | Method for producing a semiconductor device with a floating gate | Hiroshi Nozawa, Shigeru Morita | 1986-11-04 |
| 4610078 | Method of making high density dielectric isolated gate MOS transistor | Hiroshi Nozawa | 1986-09-09 |
| 4592026 | Memory device resistant to soft errors | Mitsuo Isobe, Takayasu Sakurai | 1986-05-27 |
| 4573143 | Semiconductor memory device having tunnel diodes | — | 1986-02-25 |
| 4459325 | Semiconductor device and method for manufacturing the same | Hiroshi Nozawa, Junichi Matsunaga | 1984-07-10 |
| 4419142 | Method of forming dielectric isolation of device regions | — | 1983-12-06 |