Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6198067 | Plasma processing device for circuit supports | Hiroyuki Ikeda, Shoji Shiga | 2001-03-06 |
| 5629915 | Digital signal conversion enabling to find unauthorized change of the signal | — | 1997-05-13 |
| 5309387 | Tamper resistant module with logical elements arranged on a substrate to protect information stored in the same module | — | 1994-05-03 |
| 5294984 | Video signal processing system for producing intermediate pixel data from neighboring pixel data to improve image quality | Kazuo Toraichi, Masaru Kamada | 1994-03-15 |
| 5185717 | Tamper resistant module having logical elements arranged in multiple layers on the outer surface of a substrate to protect stored information | — | 1993-02-09 |
| 5124939 | Signal modification circuit | Kazuo Toraichi, Masaru Kamada | 1992-06-23 |
| 5103392 | System for storing history of use of programs including user credit data and having access by the proprietor | — | 1992-04-07 |
| 4992792 | Digital-analog converter for converting digital audio signals | Kazuo Toraichi, Takashi Tokuyama, Youichi Hashimoto, Koichi Endo | 1991-02-12 |
| 4897654 | Digital-analog converting method, and apparatus therefor | Kazuo Toraichi | 1990-01-30 |