Robert W. Kruppa
16Patents
8h-index
12Co-inventors
69Inventor score
Filing activity: Dec 19, 1975 → Jan 9, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6247645A | Optical reader with combined housing and light pipe | Physics | 127 | Expired |
| US5613783A | Point of sale printer with magnetic reader | Performing Operations; Transporting | 34 | Expired |
| US6243504A | Integrated magnetic ink character recognition system and method therefor | Physics | 27 | Expired |
| US5973419A | Circuit and method of operation to control in-rush current and maintain power supply voltage to peripheral devices in an information system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5893667A | Point of sale printer with magnetic reader | Performing Operations; Transporting | 13 | Expired |
| US5887075A | Method, and apparatus and article of manufacture for filtering periodic noise from a magnetic read head | Physics | 12 | Expired |
| US5634729A | Magnetic reader with a flexible pressure film pressure pad | Performing Operations; Transporting | 11 | Expired |
| US5805439A | DC-to-DC auto switch circuit | Electricity | 8 | Expired |
| US6234695A | Variable power thermal printer | Performing Operations; Transporting | 7 | Expired |
| US5087867A | Motor driving apparatus and printer | Electricity | 6 | Expired |
| US6503006B1 | Variable power thermal printer | Performing Operations; Transporting | 5 | Expired |
| US4034243A | Logic array structure for depletion mode-FET load circuit technologies | Electricity | 5 | Expired |
| US7480403B2 | Apparatus, system, and method for fraud detection using multiple scan technologies | Physics | 2 | Active |
| US7492974B2 | Gray scale image cleaning system and method | Physics | 2 | Active |
| US6648225B2 | Optical reader with combined housing and light pipe | Physics | 2 | Expired |
| US7952775B2 | Gray scale image cleaning system and method | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.