Hirofumi Abe
35Patents
9h-index
42Co-inventors
75Inventor score
Filing activity: Jan 25, 1994 → Dec 10, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5623442A | Memory cells and memory devices with a storage capacitor of parasitic capacitance and information storing method using the same | Physics | 71 | Expired |
| US6794921B2 | Clamp circuit | Electricity | 49 | Expired |
| US5716864A | Method of manufacturing a non-volatile semiconductor memory device with peripheral transistor | Electricity | 43 | Expired |
| US5444650A | Semiconductor programmable read only memory device | Physics | 27 | Expired |
| US5625218A | Semiconductor device equipped with a heat-fusible thin film resistor and production method thereof | Electricity | 17 | Expired |
| US5855334A | Rectangular parallelepipedic case and method of producing the same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6903460B2 | Semiconductor equipment | Electricity | 12 | Expired |
| US6972973B2 | Voltage booster having noise reducing structure | Electricity | 11 | Expired |
| US7268596B2 | Semiconductor device for driving a load | Electricity | 9 | Expired |
| US9116330B2 | Image pickup lens and image pickup apparatus including the same | Physics | 7 | Active |
| US5806786A | Web roll container | Physics | 7 | Expired |
| US6876180B2 | Power supply circuit having a start up circuit | Physics | 6 | Expired |
| US6179123A | Light-Shielding packaging system for photosensitive web roll | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6375008B2 | Light shielding packaging system for photosensitive web roll | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9250426B2 | Zoom lens and image pickup apparatus including the same | Physics | 4 | Active |
| US6614282B2 | Clamp circuit for a semiconductor integrated circuit device | Electricity | 4 | Expired |
| US9952446B2 | Zoom lens and image pickup apparatus including the same | Physics | 4 | Active |
| US9715090B2 | Zoom lens and image pickup apparatus including the same | Electricity | 3 | Active |
| US9651762B2 | Zoom lens and image pickup apparatus including the same | Physics | 3 | Active |
| US6789675B2 | Light-sensitive material package | Physics | 3 | Expired |
| US7034616B2 | Operational amplification circuit, overheat detecting circuit and comparison circuit | Electricity | 2 | Expired |
| US8511919B2 | Light quantity adjustment device and image pickup apparatus including same | Physics | 1 | Active |
| US11009677B2 | Zoom lens, image pickup apparatus including zoom lens, and image pickup system | Electricity | 1 | Active |
| US11061203B2 | Zoom lens, and image pickup apparatus and image pickup system including the zoom lens | Electricity | 1 | Active |
| US7183802B2 | Semiconductor output circuit | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.