Hiroshi Nakamura
727Patents
47h-index
773Co-inventors
93Inventor score
Filing activity: Oct 9, 1974 → Oct 3, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6215952A | Information record medium, apparatus for recording the same and apparatus for reproducing the same | Electricity | 227 | Expired |
| US6134140A | Nonvolatile semiconductor memory device with soft-programming to adjust erased state of memory cells | Physics | 179 | Expired |
| US6907497B2 | Non-volatile semiconductor memory device | Physics | 153 | Expired |
| US6295227A | Non-volatile semiconductor memory device | Physics | 114 | Expired |
| US4963239A | Sputtering process and an apparatus for carrying out the same | Electricity | 110 | Expired |
| US6525964B2 | Semiconductor memory device | Physics | 103 | Expired |
| US6879520B2 | Non-volatile semiconductor memory device and electric device with the same | Physics | 98 | Expired |
| US6204731A | Power amplifier | Electricity | 98 | Expired |
| US6097638A | Semiconductor memory device | Physics | 98 | Expired |
| US6751733B1 | Remote authentication system | Physics | 97 | Expired |
| US6108486A | Information record medium, apparatus for recording the same and apparatus for reproducing the same enabling easy access to information | Electricity | 90 | Expired |
| US6446177B1 | Memory system | Physics | 89 | Expired |
| US7492641B2 | Non-volatile semiconductor memory device | Physics | 88 | Active |
| US6268904A | Optical exposure apparatus and photo-cleaning method | Physics | 85 | Expired |
| US6674786B1 | Data demodulation | Electricity | 80 | Expired |
| US6937510B2 | Non-volatile semiconductor memory | Physics | 79 | Expired |
| US5523980A | Semiconductor memory device | Physics | 79 | Expired |
| US6353242B1 | Nonvolatile semiconductor memory | Electricity | 79 | Expired |
| US6127492A | Thermoplastic resin composition and heat-resistant tray for IC | Chemistry; Metallurgy | 76 | Expired |
| US6999344B2 | Non-volatile semiconductor memory device and electric device with the same | Physics | 75 | Expired |
| US5768190A | Electrically erasable and programmable non-volatile semiconductor memory with automatic write-verify controller | Physics | 75 | Expired |
| US5361227A | Non-volatile semiconductor memory device and memory system using the same | Physics | 75 | Expired |
| US4733455A | Method of manufacturing a magnetic head with an MR element | Emerging Cross-Sectional Technologies | 73 | Expired |
| US6549464B2 | Nonvolatile semiconductor memory device | Physics | 73 | Expired |
| US4573723A | System including bi-directional drive mechanism | Emerging Cross-Sectional Technologies | 72 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.