Inventor · Hachioji, JP

Ryotaro Sakurai

17Patents
4h-index
16Co-inventors
53Inventor score

Filing activity: Sep 23, 2003 → Mar 18, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US7558107B2 Non volatile memory Physics 42 Active
US6912155B2 Non volatile memory Physics 37 Expired
US9318196B1 Non-volatile semiconductor memory device Physics 19 Active
US7457161B2 Nonvolatile memory apparatus Physics 6 Active
US7426136B2 Non volatile memory Physics 4 Expired
US9842650B2 Non-volatile SRAM memory cell, and non-volatile semiconductor storage device Physics 3 Active
US10074660B2 Semiconductor memory device Electricity 2 Active
US7170787B2 Nonvolatile memory apparatus Physics 2 Expired
US10680001B2 Non-volatile semiconductor memory device Electricity 2 Active
US7808828B2 Non volatile memory Physics 1 Active
US10102911B2 Non-volatile semiconductor storage device for reducing the number of memory cells arranged along a control to which a memory gate voltage is applied Physics 1 Active
US10263002B2 Anti-fuse memory and semiconductor storage device Electricity 0 Active
US9830989B2 Non-volatile semiconductor storage device Electricity 0 Active
US8670280B2 Charge pump circuit, nonvolatile memory, data processing apparatus, and microcomputer application system Electricity 0 Active
US10074658B2 Non-volatile SRAM memory cell and non-volatile semiconductor storage device Electricity 0 Active
US10038101B2 Memory cell and non-volatile semiconductor storage device Electricity 0 Active
US8634255B2 Charge pump circuit, nonvolatile memory, data processing apparatus, and microcomputer application system General 0 Revoked

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.