Inventor · Yokohama, JP

Hiroto Nakai

63Patents
25h-index
61Co-inventors
91Inventor score

Filing activity: May 18, 1987 → Sep 15, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5297029A Semiconductor memory device Physics 128 Expired
US8135900B2 Integrated memory management and memory management method Physics 107 Active
US5321655A Semiconductor memory device Physics 106 Expired
US5258958A Semiconductor memory device Physics 89 Expired
US5371702A Block erasable nonvolatile memory device Physics 78 Expired
US5361227A Non-volatile semiconductor memory device and memory system using the same Physics 75 Expired
US8738851B2 Device and memory system for swappable memory Physics 63 Active
US4819212A Nonvolatile semiconductor memory device with readout test circuitry Physics 63 Expired
US8458436B2 Device and memory system for memory management using access frequency information Physics 63 Active
US8589639B2 Memory management unit and memory management method for controlling a nonvolatile memory and a volatile memory Physics 63 Active
US5428569A Non-volatile semiconductor memory device Physics 63 Expired
US6028794A Nonvolatile semiconductor memory device and erasing method of the same Physics 51 Expired
US6122193A Non-volatile semiconductor memory capable of storing 1-bit data or multi-bit data Physics 51 Expired
US5546351A Non-volatile semiconductor memory device and memory system using the same Physics 46 Expired
US6262926A Nonvolatile semiconductor memory device Physics 42 Expired
US5197028A Semiconductor memory device with dual reference elements Physics 42 Expired
US5682346A Nonvolatile semiconductor memory device having suitable writing efficiency Physics 41 Expired
US5724300A Non-volatile semiconductor memory device and memory system using the same Physics 37 Expired
US6172911A Non-volatile semiconductor memory device with an improved verify voltage generator Physics 33 Expired
US5615165A Non-volatile semiconductor memory device and memory system using the same Physics 32 Expired
US5587948A Nonvolatile semiconductor memory with NAND structure memory arrays Physics 31 Expired
US5214609A Semiconductor integrated circuit Physics 26 Expired
US5073726A Input circuit of semiconductor integrated circuit and semiconductor integrated circuit having input circuit Electricity 26 Expired
US4922133A Voltage detecting circuit Electricity 25 Expired
US5436913A Non-volatile semiconductor memory device using successively longer write pulses Physics 25 Expired

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