Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12273427 | Notification sending apparatus, notification receiving apparatus, notification delivery system including these, and notification sending method | — | 2025-04-08 |
| 12101384 | Terminal device and control method thereof and system | — | 2024-09-24 |
| 11404119 | Non-volatile memory device and challenge response method | Yoshikazu Katoh | 2022-08-02 |
| 11195582 | Non-volatile memory device and method of writing to non-volatile memory device | Yoshikazu Katoh, Naoto Kii | 2021-12-07 |
| 10096359 | Nonvolatile memory device having resistive memory cells including at least one resistive memory cell initial state | Yoshikazu Katoh | 2018-10-09 |
| 9892783 | Non-volatile memory device including memory cells having variable resistance values | Yoshikazu Katoh | 2018-02-13 |
| 9653161 | Tamper-resistant non-volatile memory device comprising an arithmetic circuit that, in operation, calculates a binary reference value based on at least a part of the pieces of resistance value information, a read circuit that, in operation, selectively assigns, based on the binary reference value, one of two values to each of the pieces of resistance value information, and a write circuit that, in operation, performs a write operation corresponding to one of the two values among memory cells | Yoshikazu Katoh | 2017-05-16 |
| 9640238 | Data generating device and data generating method | Satoru Ogasahara, Yoshikazu Katoh | 2017-05-02 |
| 9548113 | Tamper-resistant non-volatile memory device | Yoshikazu Katoh | 2017-01-17 |
| 9536581 | Tamper-resistant non-volatile memory device | Yoshikazu Katoh, Satoru Ogasahara | 2017-01-03 |
| 9484090 | Read and write methods for a resistance change non-volatile memory device | Kazuhiko Shimakawa, Ken Kawai, Ryotaro Azuma | 2016-11-01 |
| 9390791 | Resistance change non-volatile storage memory device and method | Yoshikazu Katoh, Satoru Ogasahara | 2016-07-12 |