Inventor · Kokubunji, JP

Digh Hisamoto

86Patents
13h-index
69Co-inventors
87Inventor score

Filing activity: Apr 17, 1991 → Feb 2, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US5177576A Dynamic random access memory having trench capacitors and vertical transistors Electricity 118 Expired
US7235441B2 Nonvolatile semiconductor memory device with tapered sidewall gate and method of manufacturing the same Electricity 51 Expired
US7504689B2 Semiconductor device and manufacturing method of semiconductor device Electricity 51 Expired
US7667259B2 Non-volatile semiconductor device and method of fabricating embedded non-volatile semiconductor memory device with sidewall gate Physics 30 Active
US5357464A Semiconductor memory having writing and reading transistors, method of fabrication thereof, and method of use thereof Electricity 30 Expired
US5270232A Process for fabricating field effect transistor Emerging Cross-Sectional Technologies 23 Expired
US7723779B2 Integrated semiconductor nonvolatile storage device Physics 21 Active
US8030668B2 Semiconductor LED, opto-electronic integrated circuits (OEIC), and method of fabricating OEIC Electricity 18 Active
US5200635A Semiconductor device having a low-resistivity planar wiring structure Electricity 18 Expired
US7245531B2 Semiconductor device Electricity 18 Expired
US7132718B2 Fabrication method and structure of semiconductor non-volatile memory device Electricity 14 Expired
US7915666B2 Nonvolatile semiconductor memory devices with charge injection corner Electricity 14 Active
US7872298B2 Split-gate type memory device Physics 14 Active
US7259422B1 Nonvolatile semiconductor memory device and its fabrication method Electricity 13 Active
US7339827B2 Non-volatile semiconductor memory device and writing method thereof Electricity 8 Expired
US7671404B2 Fabrication method and structure of semiconductor non-volatile memory device Electricity 8 Active
US8436333B2 Silicon light emitting diode, silicon optical transistor, silicon laser and its manufacturing method Electricity 7 Active
US7268042B2 Nonvolatile semiconductor memory and making method thereof Electricity 7 Expired
US8076709B2 Nonvolatile semiconductor memory device Electricity 7 Active
US7935597B2 Semiconductor device and manufacturing method of the same Physics 7 Active
US7863131B2 Semiconductor device and manufacturing method for semiconductor device to reduce the lithography masks Physics 7 Active
US7085157B2 Nonvolatile memory device and semiconductor device Physics 7 Expired
US7531853B2 Semiconductor device and manufacturing method of the same Electricity 6 Active
US9257446B2 Semiconductor device and method of manufacturing same Electricity 6 Active
US7529126B2 Nonvolatile memory device and semiconductor device Physics 5 Active

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