Masuo Maruyama
7Patents
3h-index
23Co-inventors
57Inventor score
Filing activity: May 24, 1985 → Jan 19, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4680662A | Disk cartridge having a shutter mechanism | Physics | 24 | Expired |
| US4727444A | Loading device for a cartridge | Physics | 18 | Expired |
| US6449232B1 | Disk type determination method | Physics | 17 | Expired |
| US7421720B2 | Optical disk device | Physics | 3 | Expired |
| US6469865B1 | Disk apparatus | Physics | 3 | Expired |
| US7260041B2 | Disk drive | Physics | 3 | Expired |
| US8752080B2 | Turntable having elastic layer with high contact pressure portion | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.