Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9390703 | Masking sound generating apparatus, storage medium stored with masking sound signal, masking sound reproducing apparatus, and program | Takashi Yamakawa, Masato Hata, Yasushi Shimizu | 2016-07-12 |
| 8861742 | Masker sound generation apparatus and program | Yasushi Shimizu, Masato Hata, Takashi Yamakawa | 2014-10-14 |
| 8428272 | Masking sound generating apparatus, masking system, masking sound generating method, and program | Mikio Tohyama, Yasushi Shimizu | 2013-04-23 |