Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618948 | Apparatus for detecting obstructions behind vehicle | Hiroyuki Sakakibara, Shigeyuki Akita, Masao Kodera | 1986-10-21 |
| 4551722 | Apparatus and method for detecting obstacles in the path of a moving vehicle | Tadashi Tsuda, Seiichiro Hiramatsu, Mitsugi Ohtsuka | 1985-11-05 |
| 4490716 | Ultrasonic distance detector | Tadashi Tsuda, Seiichirou Hiramatsu, Mitsugi Ohtsuka | 1984-12-25 |
| 4482889 | Device for detecting failure of ultrasonic apparatus | Tadashi Tsuda, Seiichiro Hiramatsu, Mitsugi Ohtsuka | 1984-11-13 |