John Crooks
50Patents
10h-index
25Co-inventors
78Inventor score
Filing activity: Aug 30, 1990 → Sep 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5587560A | Portable handwritten data capture device and method of using | Physics | 153 | Expired |
| US6539363B1 | Write input credit transaction apparatus and method with paperless merchant credit card processing | Physics | 108 | Expired |
| US5285506A | Method of recording a handwritten message | Physics | 38 | Expired |
| US5401916A | Method and apparatus for capturing handwritten information and providing visual feedback | Physics | 35 | Expired |
| US5191175A | Self-tuning digitizer control circuit and method | Physics | 25 | Expired |
| US5335230A | Apparatus and method for automatic digitizer fault detection | Physics | 23 | Expired |
| US5115107A | Method of correcting skew between a digitizer and a digital display | Physics | 23 | Expired |
| US5563381A | Handwriting capture system with segmented digitizer | Physics | 18 | Expired |
| US5414441A | Temperature compensation apparatus for liquid crystal display | Physics | 17 | Expired |
| US7673796B2 | System and method for providing remote site intervention support for self-checkout stations | Physics | 11 | Active |
| US5412161A | Handwriting capture system with segmented digitizer | Physics | 9 | Expired |
| US5373117A | Method for reducing errors in a digitizer | Physics | 6 | Expired |
| US5140107A | Digitizer screen and method of making | Physics | 5 | Expired |
| US8622299B2 | Apparatus, method and system for determining the source of an optical code presentated to an optical code scanner | Physics | 4 | Active |
| US5387765A | Data secure digitizer control circuit and method | Physics | 4 | Expired |
| US8199004B1 | RFID tag reader | Physics | 3 | Active |
| US11113683B2 | Displaced scanner status indicator | Electricity | 2 | Active |
| US7617979B2 | Method of determining failure of an RFID label reader | Physics | 2 | Active |
| US9836679B2 | Controlled and multi-color scanner illumination | Electricity | 2 | Active |
| US6781580B2 | Methods and apparatus for replacing an electronic shelf label battery | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9519816B2 | Method and apparatus for optimizing optical code scanning | Physics | 1 | Active |
| US11494750B2 | Not-on-file imaging system and processing | Physics | 1 | Active |
| US9911112B2 | Continuous shrink reduction system sensitivity adjustment | Physics | 1 | Active |
| US9250116B2 | Apparatus, method and system for generating an optical code with authenticatable information | Physics | 1 | Active |
| US11775952B2 | Multi-camera simultaneous imaging for multiple processes | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.