Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5604809 | Sound field control system | Hirofumi Yanagawa | 1997-02-18 |
| 5201005 | Sound field compensating apparatus | Fumio Matsushita | 1993-04-06 |
HT
Hiroshi Tsubonuma
Overall (All Time): #2,268,187 of 4,157,543Top 55%
2
Patents All Time