Ken Sugawara
8Patents
7h-index
14Co-inventors
60Inventor score
Filing activity: Sep 13, 1988 → Oct 19, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5550781A | Semiconductor apparatus with two activating modes of different number of selected word lines at refreshing | Physics | 71 | Expired |
| US5430681A | Memory cartridge and its memory control method | Physics | 23 | Expired |
| US5086388A | Semiconductor serial/parallel-parallel/serial file memory and storage system | Physics | 17 | Expired |
| US4958323A | Semiconductor file memory | Physics | 13 | Expired |
| US5404490A | Photomagnetic signal detecting device | Physics | 13 | Expired |
| US5513121A | Optical head | Physics | 9 | Expired |
| US7280854B2 | Portable information terminal cradle apparatus | Electricity | 9 | Expired |
| US9027518B2 | Continuously variable valve lift device | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.