Reika Ichihara
71Patents
8h-index
53Co-inventors
77Inventor score
Filing activity: Sep 27, 2005 → Mar 6, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7948790B2 | Semiconductor memory device | Physics | 17 | Active |
| US9105838B2 | Nonvolatile variable resistive device | Electricity | 16 | Active |
| US7563678B2 | Semiconductor device and method of manufacturing the same | Electricity | 16 | Active |
| US7485936B2 | Semiconductor device and method of manufacturing the same | Electricity | 13 | Expired |
| US8274815B2 | Nonvolatile semiconductor memory device | Physics | 12 | Active |
| US8804401B2 | Non-volatile semiconductor memory device | Physics | 12 | Active |
| US7964489B2 | Semiconductor device | Electricity | 11 | Active |
| US7807990B2 | Semiconductor device | Electricity | 11 | Active |
| US8085577B2 | Nonvolatile semiconductor memory device and method of data write/data erase therein | Physics | 7 | Active |
| US8331137B2 | Nonvolatile semiconductor memory device | Physics | 7 | Active |
| US7391085B2 | Semiconductor device | Electricity | 5 | Expired |
| US8355275B2 | Resistance change memory | Physics | 5 | Active |
| US8320157B2 | Nonvolatile semiconductor memory device | Physics | 4 | Active |
| US8759806B2 | Semiconductor memory device | Electricity | 4 | Active |
| US7541657B2 | Semiconductor device and method for manufacturing the same | Electricity | 3 | Active |
| US8320158B2 | Nonvolatile semiconductor memory device | Physics | 3 | Active |
| US8391048B2 | Non-volatile semiconductor memory device including memory cells with a variable resistor | Physics | 3 | Active |
| US7863695B2 | Complementary MISFET semiconductor device having an atomic density ratio aluminum/lanthanum (Al/La) in the gate insulating layer of PMIS is larger than that of the NMIS | Electricity | 3 | Active |
| US7429776B2 | Semiconductor device and method for manufacturing the same | Electricity | 3 | Expired |
| US7968956B2 | Semiconductor device | Electricity | 3 | Active |
| US10446227B2 | Read circuit for a variable resistance memory device | Physics | 3 | Active |
| US8633526B2 | Nonvolatile semiconductor memory device and method for manufacturing same | Electricity | 3 | Active |
| US9349948B2 | Non-volatile variable resistive element, controlling device and storage device | Physics | 3 | Active |
| US7432570B2 | Semiconductor device and manufacturing method thereof | Electricity | 2 | Active |
| US9431104B2 | Reconfigurable circuit and method of programming the same | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.