Ronald E. Ham
25Patents
11h-index
24Co-inventors
75Inventor score
Filing activity: Jul 22, 1974 → Jul 29, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5781617A | Communication server apparatus using frequency multiplexing and method | Electricity | 133 | Expired |
| US5898761A | Communication server apparatus using digital signal switching and method | Electricity | 108 | Expired |
| US5852655A | Communication server apparatus having distributed switching and method | Electricity | 102 | Expired |
| US6014431A | Communication server apparatus having four-wire switching interface and method | Electricity | 70 | Expired |
| US6239672A | Wall mount filter for a digital subscriber line (xDSL) network and methods of installation and manufacture | Electricity | 47 | Expired |
| US5298883A | Proximity alert system | Electricity | 43 | Expired |
| US6674843B1 | Apparatus system and method for enabling multi-frequency communication over a telephone network having a billing/tax tone | Electricity | 42 | Expired |
| US6778902B2 | System for monitoring and locating people and objects | Physics | 23 | Expired |
| US7050906B2 | System for monitoring and locating people and objects | Physics | 23 | Expired |
| US6169788A | Communication server apparatus having distributed switching and method | Electricity | 15 | Expired |
| US5260563A | Compact laser warning receiver | Physics | 12 | Expired |
| US3942120A | SWD FM receiver circuit | Electricity | 9 | Expired |
| US5513219A | Apparatus and method for transmitting information with a subminimally modulated transmission signal | Electricity | 8 | Expired |
| US6282273A | Communication server apparatus using frequency multiplexing and method | Electricity | 8 | Expired |
| US10296863B2 | Wireless sensor devices for post-harvest crop quality and pest management | Electricity | 7 | Active |
| US6114897A | Low distortion compensated field effect transistor (FET) switch | Electricity | 7 | Expired |
| US6856682B1 | System and method for processing an input signal communicated on a telephone line | Electricity | 5 | Expired |
| US6567519B1 | System and method for processing an input signal communicated on a telephone line | Electricity | 4 | Expired |
| US8441947B2 | Simultaneous data packet processing | Electricity | 3 | Active |
| US10614403B2 | Methods for post-harvest crop quality management | Electricity | 3 | Active |
| US8552911B2 | Automatic electronically tuned electrically small transmitting antenna system | Electricity | 1 | Active |
| US8927260B2 | Anaylte detection system using an oscillating magnetic field | Physics | 1 | Active |
| US12026655B2 | Systems and methods for post-harvest crop quality management | Electricity | 0 | Active |
| US11496176B1 | Large instantaneous bandwidth radio frequency front-end for wireless systems | Electricity | 0 | Active |
| US11416802B2 | Systems and methods for post-harvest crop quality management | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.