John C. Johnson
52Patents
12h-index
78Co-inventors
87Inventor score
Filing activity: Jul 22, 1991 → Sep 28, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5539812A | Method and apparatus for detecting an attempted three-way conference call on a remote telephone | Electricity | 177 | Expired |
| US6141406A | Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path | Electricity | 114 | Expired |
| US5287555A | Power control circuitry for a TDMA radio frequency transmitter | Electricity | 79 | Expired |
| US6187394A | Liquid filled bubbling display | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US8195346B1 | Envelope protection for mechanically-controlled aircraft | Performing Operations; Transporting | 37 | Active |
| US6769091B2 | Encoding method and apparatus using squished trellis codes | Electricity | 29 | Expired |
| US8947382B2 | Wearable display device, corresponding systems, and method for presenting output on the same | Emerging Cross-Sectional Technologies | 29 | Active |
| US9075144B1 | Digital radar altimeter | Physics | 20 | Active |
| USD439402S | Storage container for digital camera accessories | General | 19 | Expired |
| USD402586S | Bubbling display panel | General | 19 | Expired |
| US8280730B2 | Method and apparatus of increasing speech intelligibility in noisy environments | Physics | 16 | Active |
| US7136471B2 | Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path | Electricity | 13 | Expired |
| US6732321B2 | Method, apparatus, and article of manufacture for error detection and channel management in a communication system | Electricity | 12 | Expired |
| US9400291B2 | Integrated circuit test temperature control mechanism | Physics | 10 | Active |
| US6935022B2 | Advanced microelectronic heat dissipation package and method for its manufacture | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD393815S | Visual display | General | 10 | Expired |
| USD391891S | Visual display | General | 9 | Expired |
| US8364477B2 | Method and apparatus for increasing speech intelligibility in noisy environments | Physics | 8 | Active |
| US9869714B2 | Integrated circuit test temperature control mechanism | Physics | 8 | Active |
| USD406609S | Bubbling display panel | General | 6 | Expired |
| USD408756S | Bubbling display panel | General | 5 | Expired |
| USD398555S | Bubbling display | General | 4 | Expired |
| USD402228S | Bubbling display | General | 4 | Expired |
| US8947385B2 | Method and device for interactive stereoscopic display | Electricity | 4 | Active |
| US9305816B2 | Methods and devices for securing and transporting singulated die in high volume manufacturing | Electricity | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.