Junzo Kumakura
8Patents
5h-index
12Co-inventors
56Inventor score
Filing activity: Jul 28, 1992 → Apr 20, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5384760A | Disk changer player with stocker between loading/unloading position and reproducing unit | Physics | 28 | Expired |
| US6430143B1 | Optical pickup device and optical disc recording and/or reproducing apparatus | Physics | 14 | Expired |
| US5301177A | Device for simultaneously loading two different kinds of recording media | Physics | 11 | Expired |
| US6118618A | Disk cartridge loading device for recording and/or reproducing apparatus | Physics | 7 | Expired |
| US6396794B1 | Disc recording and/or reproducing devices with disc exchanging function | Physics | 5 | Expired |
| US7006410B2 | Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup | Physics | 1 | Expired |
| US7012868B2 | Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up | Physics | 0 | Expired |
| US7020059B2 | Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.