Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12190950 | Variable resistance nonvolatile storage device and write method therefor | Koji Katayama | 2025-01-07 |
| 12158459 | Hydrogen sensor, hydrogen detection method, and hydrogen detection device | Kazunari Homma, Koji Katayama | 2024-12-03 |
| 12007348 | Method for driving gas sensor, and gas detection device | Kazunari Homma, Koji Katayama, Shunsaku Muraoka | 2024-06-11 |
| 11536677 | Gas detection device, gas sensor system, fuel cell vehicle, and hydrogen detection method | Koji Katayama, Shinichi Yoneda | 2022-12-27 |
| 11027604 | Hydrogen detection apparatus, fuel cell vehicle, hydrogen leak monitoring system, compound sensor module, hydrogen detection method, and recording medium | Shinichi Yoneda | 2021-06-08 |
| 9524776 | Forming method for variable-resistance nonvolatile memory element | Koji Katayama | 2016-12-20 |
| 9484090 | Read and write methods for a resistance change non-volatile memory device | Yuhei Yoshimoto, Kazuhiko Shimakawa, Ryotaro Azuma | 2016-11-01 |
| 9378817 | Variable resistance nonvolatile memory element writing method and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Yoshikazu Katoh | 2016-06-28 |
| 9336881 | Variable resistance nonvolatile memory device including a variable resistance layer that changes reversibly between a low resistance state and a high resistance state according to an applied electrical signal | Kazuhiko Shimakawa, Ryotaro Azuma, Shunsaku Muraoka | 2016-05-10 |
| 9251896 | Variable resistance nonvolatile memory device and method for writing into the same | Yuichiro Ikeda, Kazuhiko Shimakawa, Yoshikazu Katoh | 2016-02-02 |
| 9202565 | Write method for writing to variable resistance nonvolatile memory element and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Yoshikazu Katoh | 2015-12-01 |
| 9064573 | Writing method of variable resistance non-volatile memory element and variable resistance non-volatile memory device | Kazuhiko Shimakawa, Yoshikazu Katoh | 2015-06-23 |
| 9001557 | Variable resistance nonvolatile memory element writing method and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Yoshikazu Katoh, Yuichiro Ikeda | 2015-04-07 |
| 8923032 | Crosspoint nonvolatile memory device and forming method thereof | Kazuhiko Shimakawa, Akifumi Kawahara, Ryotaro Azuma | 2014-12-30 |
| 8902629 | Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Koji Katayama, Shunsaku Muraoka | 2014-12-02 |
| 8867259 | Method of programming variable resistance nonvolatile memory element | Kazuhiko Shimakawa, Yoshikazu Katoh, Shunsaku Muraoka | 2014-10-21 |
| 8848421 | Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Koji Katayama | 2014-09-30 |
| 8687409 | Variable resistance nonvolatile memory device | Yuichiro Ikeda, Kazuhiko Shimakawa, Ryotaro Azuma | 2014-04-01 |
| 8665633 | Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory device | Ryotaro Azuma, Kazuhiko Shimakawa, Shunsaku Muraoka | 2014-03-04 |
| 8625328 | Variable resistance nonvolatile storage device | Hiroshi Tomotani, Kazuhiko Shimakawa | 2014-01-07 |
| 8395925 | Forming method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Shunsaku Muraoka, Ryotaro Azuma | 2013-03-12 |
| 8325508 | Writing method for variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device | Kazuhiko Shimakawa, Shunsaku Muraoka, Ryotaro Azuma | 2012-12-04 |
| 8305795 | Nonvolatile variable resistance memory element writing method, and nonvolatile variable resistance memory device | Ryotaro Azuma, Kazuhiko Shimakawa, Shunsaku Muraoka | 2012-11-06 |
| 8179714 | Nonvolatile storage device and method for writing into memory cell of the same | Takeshi Takagi, Shunsaku Muraoka, Mitsuteru Iijima, Kazuhiko Shimakawa | 2012-05-15 |
| 8094482 | Nonvolatile memory apparatus and nonvolatile data storage medium | Zhiqiang Wei, Takeshi Takagi, Kazuhiko Shimakawa | 2012-01-10 |