Tsuguyasu Hatsuda
19Patents
8h-index
15Co-inventors
65Inventor score
Filing activity: Oct 16, 1990 → Jul 28, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5389898A | Phase locked loop having plural selectable voltage controlled oscillators | Electricity | 78 | Expired |
| US5391938A | Comparator using XNOR and XOR gates | Physics | 20 | Expired |
| US6066177A | Method and apparatus for calculating delay for logic circuit and method of calculating delay data for delay library | Physics | 19 | Expired |
| US5576565A | MIS capacitor and a semiconductor device utilizing said MIS capacitor | Electricity | 18 | Expired |
| US6604066B1 | Method and apparatus for calculating delay for logic circuit and method of calculating delay data for delay library | Physics | 12 | Expired |
| US5408438A | Semiconductor memory | Physics | 12 | Expired |
| US7148735B2 | Level shifter having automatic delay adjusting function | Electricity | 11 | Expired |
| US5764094A | Level shift circuit for analog signal and signal waveform generator including the same | Electricity | 11 | Expired |
| US5671181A | Data read circuit used in semiconductor storage device | Physics | 7 | Expired |
| US5206825A | Arithmetic processor using signed-digit representation of external operands | Physics | 7 | Expired |
| US5517140A | Sample and hold circuit | Physics | 7 | Expired |
| US5153847A | Arithmetic processor using signed digit representation of internal operands | Physics | 5 | Expired |
| US5289414A | Comparator | Physics | 4 | Expired |
| US5252863A | Drive circuit for use in a semiconductor integrated circuit | Physics | 4 | Expired |
| US5559456A | Sensing circuit unit for a dynamic circuit | Electricity | 3 | Expired |
| US5892723A | Potential difference transmission device and semiconductor memory device using the same | Physics | 3 | Expired |
| US5672987A | Potential difference transmission device and semiconductor memory device using the same | Physics | 1 | Expired |
| US6922443B1 | Signal transmission circuit | Electricity | 1 | Expired |
| US7369618B2 | Signal transmission circuit | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.