Keith O. Johnson
14Patents
10h-index
11Co-inventors
69Inventor score
Filing activity: Jan 10, 1974 → Jul 5, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5479168A | Compatible signal encode/decode system | Electricity | 179 | Expired |
| US5872531A | Signal encode/decode system | Electricity | 64 | Expired |
| US7184556B1 | Compensation system and method for sound reproduction | Electricity | 45 | Expired |
| US5808574A | Systems for achieving enhanced frequency resolution | Electricity | 34 | Expired |
| US5014713A | Method and apparatus for measuring thickness of fat using infrared light | Human Necessities | 26 | Expired |
| US5640161A | Silent data conversion system with sampling during electrical silence | Electricity | 24 | Expired |
| US5864311A | Systems for enhancing frequency bandwidth | Electricity | 23 | Expired |
| US6823526B2 | Computer-based system and method for automatic configuration of an external device | Physics | 23 | Expired |
| US4124784A | Motion picture sound system | Physics | 13 | Expired |
| US5838274A | Systems for achieving enhanced amplitude resolution | Electricity | 12 | Expired |
| US5854600A | Hidden side code channels | Electricity | 8 | Expired |
| US5638074A | Method and apparatus for slew limiting | Electricity | 7 | Expired |
| US3967382A | Plenum chamber length measurement system for nuclear fuel | Physics | 6 | Expired |
| US3975949A | Leak detector probe for fuel rods | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.