Inventor · Yokohama, JP

Reika Ichihara

71Patents
8h-index
53Co-inventors
77Inventor score

Filing activity: Sep 27, 2005 → Mar 6, 2018

Most-cited inventions

PatentTitleAreaCited byStatus
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.