Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6573831 | Status notification system, status notification apparatus, and response apparatus | Kiyokazu Ikeda | 2003-06-03 |
| 5726645 | Remote controller capable of selecting and setting preset data | Iwao Takiguchi, Toshiyuki Takahashi | 1998-03-10 |
| 5227099 | Method for printing on synthetic resin molded body and headphone housing on which printing has been made by the method | Masahiko ISO, Takayuki Ishii | 1993-07-13 |
| 5224171 | Method for printing on synthetic resin molded body and headphone housing on which printing has been made by the method | Masahiko ISO, Takayuki Ishii | 1993-06-29 |
| 4981194 | Electro-acoustic transducer | Masahiko ISO, Makoto Yamagishi | 1991-01-01 |
| 4965838 | Ear piece transducer | Makoto Yamagishi | 1990-10-23 |
| 4874316 | Connector apparatus | Akira Ogiwara, Koji Nageno | 1989-10-17 |
| 4668842 | Headphone | Yoshihiro Yokoyama, Tsutomu Kakiuchi | 1987-05-26 |
| 4646872 | Earphone | Makoto Yamagishi, Shingo Watanabe | 1987-03-03 |
| 4399334 | Speaker unit for headphones | Tsutomu Kakiuchi | 1983-08-16 |
| 4376233 | Securing of lead wires to electro-acoustic transducers | Yoshihiro Yokoyama | 1983-03-08 |
| 4291205 | Laminated loudspeaker diaphragm with honeycomb core and damping layers | Jun Kishikami | 1981-09-22 |