Tsutomu Toyoguchi
10Patents
7h-index
11Co-inventors
63Inventor score
Filing activity: Oct 25, 1984 → Mar 26, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4731777A | Optical disk player | Physics | 46 | Expired |
| US4794588A | Optical disk player | Physics | 36 | Expired |
| US5022023A | Disc drive arrangement for CD player and the like capable of loading different size discs | Physics | 36 | Expired |
| US4592039A | Disc player | Physics | 29 | Expired |
| US4628498A | Disc loading apparatus for use in a disc player | Physics | 22 | Expired |
| US5293550A | Cassette loading mechanism for a recording and reproducing apparatus | Physics | 11 | Expired |
| US5596561A | Shifting device and loading device for disc-shaped recording medium | Physics | 10 | Expired |
| US5708538A | Drive arrangement for both a cassette loading mechanism and a tape loading mechanism of a recording and reproducing apparatus | Physics | 5 | Expired |
| US11950049B2 | Acoustic reflector, speaker unit, and chair | Electricity | 0 | Active |
| US11477556B2 | Sound collecting device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.