Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D395835 | Portable pressure gauge | Tomoyuki Okuyama, Tadao Nakajima | 1998-07-07 |
| 5739763 | Method for controlling electronic appliance capable of suppressing user's irritation | Masaru Sato, Shigeo Tanaka | 1998-04-14 |
| 4592093 | Super high frequency receiver | Shinobu Tsurumaru, Tadashi Kajiwara, Kenichiro Kumamoto | 1986-05-27 |
| 4570165 | Adjustable loop and dipole antenna | Shinobu Tsurumaru, Yoshio Ishigaki, Takashi Yoshikawa, Keiji Fukuzawa, Kazuhiro Imai +2 more | 1986-02-11 |
| 4358769 | Loop antenna apparatus with variable directivity | Masahiro Tada, Hirokazu Ichikawa, Mitsuo Fukushima, Koya Nakamichi, Yoshio Ishigaki | 1982-11-09 |
| 4338606 | Antenna system with variable directivity | Masahiro Tada, Yoshio Ishigaki, Koya Nakamichi | 1982-07-06 |