Hiroshi Watanabe
796Patents
47h-index
1,037Co-inventors
93Inventor score
Filing activity: Jul 17, 1974 → Mar 3, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4734568A | IC card which can set security level for every memory area | Physics | 157 | Expired |
| US6266370A | Brightness-variation compensation method and coding/decoding apparatus for moving pictures | Electricity | 143 | Expired |
| US6426512B1 | Group III nitride compound semiconductor device | Electricity | 140 | Expired |
| US6934331B2 | Brightness-variation compensation method and coding/decoding apparatus for moving pictures | Electricity | 135 | Expired |
| US5598215A | Moving image encoder and decoder using contour extraction | Electricity | 135 | Expired |
| US4829169A | IC card having state marker for record access | Physics | 134 | Expired |
| US6456658B2 | Brightness-variation compensation method and coding/decoding apparatus for moving pictures | Electricity | 125 | Expired |
| US6058044A | Shielded bit line sensing scheme for nonvolatile semiconductor memory | Physics | 120 | Expired |
| US4709136A | IC card reader/writer apparatus | Physics | 112 | Expired |
| US4797543A | Selectable data readout IC card | Physics | 107 | Expired |
| US5333012A | Motion compensating coder employing an image coding control method | Electricity | 107 | Expired |
| US4849614A | Composite IC card | Physics | 104 | Expired |
| US6379017B2 | Illuminating system | Physics | 103 | Expired |
| US5311310A | High efficiency coder and method employing overlapped motion compensation and perfect reconstruction filter banks | Electricity | 101 | Expired |
| US6785331B1 | Predictive encoding and decoding methods of video data | Emerging Cross-Sectional Technologies | 98 | Expired |
| US6117392A | Automatic analyzing apparatus | Emerging Cross-Sectional Technologies | 97 | Expired |
| US5889304A | Nonvolatile semiconductor memory device | Electricity | 89 | Expired |
| US6320220A | Quantum tunneling effect device and semiconductor composite substrate | Electricity | 89 | Expired |
| US6342404B1 | Group III nitride compound semiconductor device and method for producing | Electricity | 87 | Expired |
| US6841808B2 | Group III nitride compound semiconductor device and method for producing the same | Electricity | 83 | Expired |
| US5450057A | Stereophonic warning apparatus | Emerging Cross-Sectional Technologies | 83 | Expired |
| US4696994A | Transparent aromatic polyimide | Chemistry; Metallurgy | 83 | Expired |
| US6982435B2 | Group III nitride compound semiconductor device and method for producing the same | Electricity | 82 | Expired |
| US6353242B1 | Nonvolatile semiconductor memory | Electricity | 79 | Expired |
| US6111288A | Quantum tunneling effect device and semiconductor composite substrate | Electricity | 79 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.