Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422297 | Method for forming a semiconductor device | — | 1995-06-06 |
| 5414286 | Nonvolatile memory, method of fabricating the same, and method of reading information from the same | — | 1995-05-09 |
| 5411904 | Process for fabricating nonvolatile random access memory having a tunnel oxide film | Kenichi Tanaka, Keizo Sakiyama, Akitsu Ayukawa | 1995-05-02 |
| 5401993 | Non-volatile memory | Kenichi Tanaka, Keizo Sakiyama | 1995-03-28 |
| 5400280 | Nonvolatile memory and a method of writing data thereto | — | 1995-03-21 |
| 5338952 | Non-volatile memory | — | 1994-08-16 |
| 5331181 | Non-volatile semiconductor memory | Kenichi Tanaka, Keizo Sakiyama | 1994-07-19 |
| 5303186 | Semiconductor memory and process for manufacturing the same | — | 1994-04-12 |
| 5290721 | Method of making a stacked semiconductor nonvolatile memory device | Masanori Yoshimi, Kiyoshige Omori | 1994-03-01 |
| 5282159 | Semiconductor memory with increased capacitive storage capabilities and reduced size | Naoki Ueda, Kenichi Tanaka | 1994-01-25 |
| 5268585 | Non-volatile memory and method of manufacturing the same | — | 1993-12-07 |
| 5262986 | Semiconductor memory device with volatile memory and non-volatile memory in latched arrangement | — | 1993-11-16 |
| 5251171 | Method of operating a semiconductor memory device | — | 1993-10-05 |
| 5181188 | Semiconductor memory device | Kenichi Tanaka, Keizo Sakiyama, Katsumi Fukumoto | 1993-01-19 |
| 5172199 | Compact nonvolatile semiconductor memory device using stacked active and passive elements | Kenichi Tanaka, Keizo Sakiyama | 1992-12-15 |
| 5140552 | Semiconductor memory device having a volatile memory device and a non-volatile memory device | Kenichi Tanaka, Keizo Sakiyama | 1992-08-18 |
| 5139964 | Method for forming isolation region of semiconductor device | Shigeo Onishi, Kenichi Tanaka, Keizo Sakiyama | 1992-08-18 |
| 5108783 | Process for producing semiconductor devices | Makoto Tanigawa, Hidehisa Tateoka, Keizo Sakiyama, Shigeo Ohnishi, Kenichi Tanaka | 1992-04-28 |
| 5075888 | Semiconductor memory device having a volatile memory device and a non-volatile memory device | Kenichi Tanaka, Keizo Sakiyama | 1991-12-24 |
| 5065201 | Semiconductor memory device | — | 1991-11-12 |
| 5063425 | Semiconductor memory device with capacitor over non-volatile memory cell gate structure | Keizo Sakiyama | 1991-11-05 |
| 5043946 | Semiconductor memory device | Kenichi Tanaka, Keizo Sakiyama | 1991-08-27 |