Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884448 | Ultrasonic doppler meter | Toshio Ogawa, Hisashi Nishiyama, Shizuo Ishikawa | 1989-12-05 |
| 4865042 | Ultrasonic irradiation system | Shin-ichiro Umemura, Charles A. Cain | 1989-09-12 |
| 4841491 | Ultrasonic beam former | Shinichi Kondo, Toshio Ogawa, Shin'ichiro Umemura, Hiroshi Ikeda | 1989-06-20 |
| 4811740 | Ultrasonic diagnosis apparatus capable of probe exchange | Hiroshi Ikeda, Shinichiro Umemura | 1989-03-14 |
| 4809703 | Ultrasonic doppler blood flow meter | Shizuo Ishikawa, Toshio Ogawa | 1989-03-07 |
| 4803993 | Ultrasonic diagnosis apparatus | Hiroshi Ikeda, Shinichiro Umemura, Shizuo Ishikawa, Noriyoshi Ichikawa, Tsuyoshi Mitake | 1989-02-14 |
| 4801835 | Ultrasonic probe using piezoelectric composite material | Chitose Nakaya, Hiroshi Takeuchi | 1989-01-31 |