Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884448 | Ultrasonic doppler meter | Toshio Ogawa, Hisashi Nishiyama, Kageyoshi Katakura | 1989-12-05 |
| 4809703 | Ultrasonic doppler blood flow meter | Kageyoshi Katakura, Toshio Ogawa | 1989-03-07 |
| 4803993 | Ultrasonic diagnosis apparatus | Hiroshi Ikeda, Shinichiro Umemura, Kageyoshi Katakura, Noriyoshi Ichikawa, Tsuyoshi Mitake | 1989-02-14 |