Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8233838 | Broadcast program scene notification system | Tomihisa Kamada, Toshimizu Abiko | 2012-07-31 |
| 7457582 | Broadcast program scene notification system | Tomihisa Kamada, Toshimizu Abiko | 2008-11-25 |
| 5535283 | Active noise attenuating device | Susumu Saruta | 1996-07-09 |
| 5517571 | Active noise attenuating device of the adaptive control type | Susumu Saruta | 1996-05-14 |
| 5499301 | Active noise cancelling apparatus | Yuko Sudo, Susumu Saruta | 1996-03-12 |
| 5253486 | Silencer attenuating a noise from a noise source to be ventilated and a method for active control of its noise attenuation system | Masanori SUGAHARA, Keiji Nakanishi | 1993-10-19 |
| 5127235 | Low noise refrigerator and noise control method thereof | Keiji Nakanishi | 1992-07-07 |
| 5125241 | Refrigerating apparatus having noise attenuation | Keiji Nakanishi | 1992-06-30 |
| 5117642 | Low noise refrigerator and noise control method thereof | Keiji Nakanishi | 1992-06-02 |
| 5093864 | Silencer | Keiji Nakanishi | 1992-03-03 |
| 5052041 | Silencer | Keiji Nakanishi | 1991-09-24 |
| 4989252 | Silencer | Keiji Nakanishi | 1991-01-29 |