Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12424848 | Power system | Katsumi Iwatsuki, Hirohito Yamada, Masafumi YASHIMA, Masakazu Matsui, Hiroyuki Koshi | 2025-09-23 |
| 11848556 | Power and communications network convergence system, and control method therein | Katsumi Iwatsuki | 2023-12-19 |
| 9018683 | Terahertz electromagnetic wave conversion device | Viacheslav Popov, Wojciech Knap, Yahya Moubarak Meziani, Nina Diakonova, Dominique Coquillat +3 more | 2015-04-28 |
| 8227794 | Complementary logic gate device | Eiichi Sano | 2012-07-24 |
| 7915641 | Terahertz electromagnetic wave radiation element and its manufacturing method | Eiichi Sano | 2011-03-29 |
| 5321632 | Method and apparatus for measuring the length of a transmission line in accordance with a reflected waveform | Toshiyuki Shimizu | 1994-06-14 |
| 4928278 | IC test system | Naoaki Narumi | 1990-05-22 |