Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10823393 | LED illumination device with speaker function, and method for extracting light and sound from LED illumination device with speaker function | Syunji Yamamoto, Tetsuji Kubota, Masahiro Okumura | 2020-11-03 |
| 7123738 | Loudspeaker | Shinya Mizone, Keiji Ishikawa, Shoouji Nakajima, Satoshi Ono | 2006-10-17 |
| 5844731 | Light reflecting plate | Naoki Yoshida, Masayasu Ito, Mitsunori Okada | 1998-12-01 |
| 5723510 | Method of manufacturing thermoplastic polyester foam sheet | Naoki Yoshida, Masayasu Ito, Mitsunori Okada | 1998-03-03 |
| 5458832 | Method for manufacturing a foamed plastics of saturated polyester using a cyclic tetramer as foaming agent | Kiyoshi Nakayama, Masayasu Ito, Satoshi Ono, Naoki Yoshida | 1995-10-17 |