Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5525890 | Battery unit and battery energy billing method | Satoshi Iwatsu, Kazunori Ozawa, Yoshio Nishi, Yasuhito Eguchi | 1996-06-11 |
| 4726443 | Diaphragm | Shinichi Watanabe, Hiroyuki Sogawa, Nobuo Fuke, Masatsugu Maejima, Koichi Saruwatari | 1988-02-23 |
| 4696827 | Silicon carbide-carbon composite molded product and process for manufacturing the same | Kiyohito Okamura, Yoshio Hasegawa, Yoshiyasu Kuroo | 1987-09-29 |
| 4618591 | Silicon carbide-carbon composite molded product and process for manufacturing the same | Kiyohito Okamura, Yoshio Hasegawa, Yoshiyasu Kuroo | 1986-10-21 |
| 4281223 | Electro-acoustic transducer | Hideo Suyama, Sadaaki Sakurai, Shigenori Yamaoka, Toshinaga Endo, Akinobu Kusuhara | 1981-07-28 |
| 4276452 | Membrane type electro-acoustic transducer | Hideo Suyama | 1981-06-30 |
| 4275278 | Diaphragm for a loudspeaker | Sadaaki Sakurai, Mitsuru Takashima | 1981-06-23 |