Toshihiko Karasaki
60Patents
19h-index
34Co-inventors
80Inventor score
Filing activity: Apr 6, 1982 → Nov 24, 1998
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 |
| US5585926A | Document reading apparatus capable of rectifying a picked up image data of documents | Electricity | 50 | Expired |
| US5084611A | Document reading apparatus for detection of curvatures in documents | Electricity | 48 | Expired |
| US4768052A | Focus detecting device | Physics | 47 | Expired |
| US4831403A | Automatic focus detection system | Physics | 32 | Expired |
| US6260000A | Three-dimensional shape data processing apparatus | Physics | 31 | Expired |
| US6449004B1 | Electronic camera with oblique view correction | Electricity | 27 | 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 |
| US5218395A | Camera with a multi-zone focus detecting device | Physics | 25 | Expired |
| US4851657A | Focus condition detecting device using weighted center or contrast evaluation | Physics | 24 | Expired |
| US4910548A | Camera with a multi-zone focus detecting device | Physics | 24 | Expired |
| US4908649A | Automatic focus detection device for use in a camera | Physics | 23 | Expired |
| US4716434A | Focus condition detecting device | Physics | 23 | Expired |
| US4818865A | Focus detecting system for camera utilizing correction data on the aberration of the photographic lens | Physics | 22 | Expired |
| US4882601A | Camera with an automatic focusing device | Physics | 21 | Expired |
| US4903065A | Focus condition detecting device | Physics | 20 | Expired |
| US5068737A | Image sensor having multiple pairs of array sensors | Electricity | 19 | Expired |
| US5194729A | Document reading apparatus with area recognizing sensor and obstacle detection | Electricity | 18 | Expired |
| US5023649A | Exposure controlling apparatus of a camera having a plurality of areas for measuring brightness | Physics | 17 | Expired |
| US4878079A | Focus detecting device | Physics | 17 | Expired |
| US4857720A | Focus detecting system using multiple portions of the image to be focussed | Physics | 17 | Expired |
| US5214464A | Camera system | Physics | 17 | Expired |
| US4949116A | Focus detection apparatus of camera | Physics | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.