Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6788799 | Speaker device and associated method for manufacturing the speaker device | Toshihiro Ishigaki, Yasuhisa Abe | 2004-09-07 |
| 6742622 | Molded foam resin, process for forming the same and speaker diaphragm consisting of the same | Masatoshi Sato, Jiro Nakazono | 2004-06-01 |
| 6710130 | Propylene polymer composition and its foam moldings | Akira Yamauchi, Tadamitu Hamasaki, Shunji Kawazoe, Jun Shinozaki, Hiroyuki Maehara | 2004-03-23 |