Masataka Hamada
208Patents
25h-index
101Co-inventors
93Inventor score
Filing activity: Jan 10, 1984 → Feb 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5023646A | Automatic focus detection system | Physics | 251 | Expired |
| US4835615A | Image sensor with improved response characteristics | Electricity | 157 | Expired |
| US4952966A | Focus detecting device for use with cameras | Physics | 140 | Expired |
| US4636624A | Focus detecting device for use with cameras | Physics | 116 | Expired |
| US5597999A | Auto focus detecting device comprising both phase-difference detecting and contrast detecting methods | Physics | 56 | Expired |
| US4860045A | Automatic focusing device | Physics | 53 | Expired |
| US5895128A | Electronic flash and a camera provided with the same | Physics | 49 | Expired |
| US4783677A | Automatic focus control device | Physics | 48 | Expired |
| US4768052A | Focus detecting device | Physics | 47 | Expired |
| US6549730B1 | Focal position changeable spatial modulation unit and focus detection device | Physics | 45 | Expired |
| US5448331A | Camera utilizing additional illumination from a flash light for focus detection and exposure operation | Physics | 43 | Expired |
| US5210563A | Camera capable of correcting blurring | Physics | 42 | Expired |
| US8248497B2 | Image sensor device with movable sensor | Physics | 41 | Active |
| US5220375A | Camera having blurring correction apparatus | Physics | 38 | Expired |
| US4816856A | Automatic focus control device | Physics | 37 | Expired |
| US5005040A | Automatic focus adjusting apparatus of a camera | Physics | 35 | Expired |
| US4831403A | Automatic focus detection system | Physics | 32 | Expired |
| US4618235A | Focus detecting device for a camera | Physics | 31 | Expired |
| US4766302A | Focus detecting device including means for determining a priority of correlation calculations | Physics | 31 | Expired |
| US4812912A | Focus detection condition display device for camera | Electricity | 30 | Expired |
| US5266981A | Camera capable of correcting camera-shake | Physics | 27 | Expired |
| US6369899B1 | Camera with projector for selectively projecting pattern lights | Electricity | 26 | Expired |
| US5218395A | Camera with a multi-zone focus detecting device | Physics | 25 | Expired |
| US4792820A | Camera with automatic focus and exposure control means | Physics | 25 | Expired |
| US4734571A | Focus condition detecting device having correlation calculation means and means for determining the range of shifts of image signals | Physics | 25 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.