Inventor · Kasumigaura, JP

Ken Takeuchi

149Patents
35h-index
80Co-inventors
93Inventor score

Filing activity: Jun 29, 1995 → Jul 4, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US6046935A Semiconductor device and memory system Physics 937 Expired
US5903495A Semiconductor device and memory system Physics 455 Expired
US6301153A Nonvolatile semiconductor memory device Physics 435 Expired
US6373746B1 Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Physics 275 Expired
US6134140A Nonvolatile semiconductor memory device with soft-programming to adjust erased state of memory cells Physics 179 Expired
US5986933A Semiconductor memory device having variable number of selected cell pages and subcell arrays Physics 128 Expired
US5781478A Nonvolatile semiconductor memory device Physics 125 Expired
US6055188A Nonvolatile semiconductor memory device having a data circuit for erasing and writing operations Physics 109 Expired
US6452437B1 Voltage generator for compensating for temperature dependency of memory cell current Physics 92 Expired
US5920507A Nonvolatile semiconductor memory device Physics 91 Expired
US6064591A Memory system Physics 89 Expired
US6046940A Nonvolatile semiconductor memory device Physics 85 Expired
US6937510B2 Non-volatile semiconductor memory Physics 79 Expired
US6404274B1 Internal voltage generating circuit capable of generating variable multi-level voltages Electricity 79 Expired
US6353242B1 Nonvolatile semiconductor memory Electricity 79 Expired
US6363010B1 Nonvolatile semiconductor memory device Physics 76 Expired
US5864504A Nonvolatile semiconductor memory with temperature compensation for read/verify referencing scheme Physics 74 Expired
US6549464B2 Nonvolatile semiconductor memory device Physics 73 Expired
US6545909B2 Nonvolatile semiconductor memory device Physics 73 Expired
US6282117A Nonvolatile semiconductor memory device Physics 64 Expired
US6154391A Nonvolatile semiconductor memory device Physics 63 Expired
US5698879A Nonvolatile semiconductor memory device Electricity 59 Expired
US6798698B2 Nonvolatile semiconductor memory device Physics 58 Expired
US5680347A Nonvolatile semiconductor memory device Physics 57 Expired
US5969985A Nonvolatile semiconductor memory device Physics 57 Expired

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