Keisuke Tejima
37Patents
10h-index
16Co-inventors
72Inventor score
Filing activity: May 26, 1987 → Jun 15, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD578505S1 | Amplifier | General | 30 | Expired |
| USD305652S | Portable radiotelephone | General | 29 | Expired |
| USD475036S1 | Combined recorder and disc player | General | 24 | Expired |
| USD564493S1 | Combined disc recorder and hard disc drive | General | 23 | Expired |
| USD426540S | Stand | General | 19 | Expired |
| USD437307S | Speaker box | General | 18 | Expired |
| USD475357S1 | Optical disc player | General | 15 | Expired |
| USD597103S1 | Disc player | General | 14 | Expired |
| USD569840S1 | Amplifier | General | 14 | Expired |
| USD435034S | Combined amplifier and radio receiver | General | 12 | Expired |
| USD416258S | Speaker box | General | 10 | Expired |
| USD570330S1 | Amplifier | General | 9 | Expired |
| USD316866S | Magnetic still camera | General | 9 | Expired |
| USD580385S1 | Disc player | General | 9 | Expired |
| USD585859S1 | Combined disc recorder and hard disk drive | General | 9 | Expired |
| USD311014S | Still video camera | General | 8 | Expired |
| USD371363S | Radio receiver | General | 8 | Expired |
| USD582868S1 | Combined disc recorder and hard disc drive | General | 7 | Expired |
| USD307909S | Front panel for a compact disc player | General | 6 | Expired |
| USD585858S1 | Combined disc recorder and hard disc drive | General | 5 | Expired |
| USD503693S1 | Disc recorder | General | 5 | Expired |
| US6057995A | Disc cartridge with aperture for access to disc provided with shutter arranged for minimizing overall size of cartridge | Physics | 5 | Expired |
| USD423009S | Combined disc recorder and player | General | 5 | Expired |
| USD459715S1 | Receiver | General | 4 | Expired |
| USD681577S1 | Disc player | General | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.