Sogawa; Hiroyuki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sogawa; Hiroyuki.The latest application filed is for "audio signal reproducing apparatus".
- Sogawa; Hiroyuki - Kitashinagawa JP
- Sogawa; Hiroyuki - Kanagawa JP
| Patent | Date |
|---|---|
| Audio signal reproducing apparatus Grant 5,495,534 - Inanaga , et al. February 27, 1 | 1996-02-27 |
| Acoustic signal reproducing apparatus Grant 5,452,359 - Inanaga , et al. * September 19, 1 | 1995-09-19 |
| Earphone device Grant 5,276,740 - Inanaga , et al. January 4, 1 | 1994-01-04 |
| Acoustic signal reproducing apparatus Grant 5,181,248 - Inanaga , et al. January 19, 1 | 1993-01-19 |
| Induction speaker Grant 5,062,140 - Inanaga , et al. October 29, 1 | 1991-10-29 |
| Sound reproducing apparatus Grant 5,022,486 - Miura , et al. June 11, 1 | 1991-06-11 |
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