Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6566981 | Surface acoustic wave device having plural ground conductor films in the housing cavity | Masashi Urabe, Kouichi Maruta | 2003-05-20 |
| 5680265 | Circuit for detecting contact of MR head with disk surface | — | 1997-10-21 |
| 5592110 | Phase comparison circuit for maintaining a stable phase locked loop circuit in the absence of the pulse of an input signal | — | 1997-01-07 |
| 5583809 | Semiconductor memory capable of reducing erase time | Kei Maejima | 1996-12-10 |
| 5343434 | Nonvolatile semiconductor memory device and manufacturing method and testing method thereof | — | 1994-08-30 |
| 5262342 | Method of making a semiconductor memory device having error checking/correcting functions | Tsuyoshi Toyama, Shinichi Kobayashi | 1993-11-16 |
| 5262984 | Non-volatile memory device capable of storing multi-state data | Shinichi Kobayashi, Tsuyoshi Toyama | 1993-11-16 |
| 5182725 | Nonvolatile semiconductor memory device with reduced variation in source potential of floating gate type memory transistor and operating method therefor | Nobuaki Andoh, Kenji Kohda, Tsuyoshi Toyama, Shinichi Kobayashi | 1993-01-26 |
| 5172339 | Semiconductor memory device having error checking and correcting circuit and operating method therefor | Shinichi Kobayashi, Makoto Yamamoto, Tsuyoshi Toyama | 1992-12-15 |
| 5170227 | Mask ROM having monocrystalline silicon conductors | Masahide Kaneko | 1992-12-08 |
| 5107313 | Floating gate type semiconductor memory device | Kenji Kohda, Tsuyoshi Toyama, Nobuaki Andoh, Shinichi Kobayashi | 1992-04-21 |
| 5105386 | Nonvolatile semiconductor memory device with reduced variation in source potential of floating gate type memory transistors and operating method therefor | Nobuaki Andoh, Kenji Kohda, Tsuyoshi Toyama, Shinichi Kobayashi | 1992-04-14 |
| 5105384 | Low current semiconductor memory device | Yasushi Terada, Takeshi Nakayama, Kazuo Kobayashi | 1992-04-14 |
| 5021999 | Non-volatile semiconductor memory device with facility of storing tri-level data | Kenji Kohda, Tsuyoshi Toyama, Nobuaki Ando, Shinichi Kobayashi | 1991-06-04 |
| 4958352 | Semiconductor memory device with error check and correcting function | Tsuyoshi Toyama, Shinichi Kobayashi, Nobuaki Andoh, Kenji Kohda | 1990-09-18 |
| 4949305 | Erasable read-only semiconductor memory device | Tsuyoshi Toyama, Kenji Kohda, Nobuaki Andoh, Shinichi Kobayashi | 1990-08-14 |
| 4938276 | Method and apparatus for supplying a lead alloy to a casting machine | Shigeru Sato | 1990-07-03 |
| 4805151 | Nonvolatile semiconductor memory device | Yasushi Terada, Takeshi Nakayama, Kazuo Kobayashi | 1989-02-14 |
| 4719162 | Electrophotographically sensitive material for a litho printing plate | Shiro Nakano, Tuyoshi Ozaki | 1988-01-12 |