Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375050 | Electric power converter arrangement and electric rolling stock control device using the same | Kiyoshi Nakata, Tokunosuke Tanamachi, Mutsuhiro Terunuma, Masato Suzuki, Yoshio Tsutsui +1 more | 1994-12-20 |
| 5361196 | Power converter for converting DC voltage into AC phase voltage having three levels of positive, zero and negative voltage | Tokunosuke Tanamachi, Kiyoshi Nakata | 1994-11-01 |
| 5321599 | Control apparatus for suppressing a third harmonic neutral point voltage in a three level inverter | Tokunosuke Tanamachi, Kiyoshi Nakata | 1994-06-14 |
| 5307903 | Method and system of controlling elevators and method and apparatus of inputting requests to the control system | Yuzo Morita, Toshimitsu Tobita, Atsuya Fujino, Soshiro Kuzunuki, Kotaro Hirasawa +5 more | 1994-05-03 |
| 5298697 | Apparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of view | Masato Suzuki, Hiromi Inaba, Naofumi Nakata, Hiroaki Yamani, Naoto Oonuma | 1994-03-29 |