David E. Christian
16Patents
8h-index
20Co-inventors
72Inventor score
Filing activity: Nov 3, 1983 → May 16, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD340455S | Portable musical instrument amplifier with a movable plug | General | 65 | Expired |
| US4944016A | Portable musical instrument amplifier | Physics | 57 | Expired |
| US5124668A | System for creating distortion in electric musical instruments | Electricity | 21 | Expired |
| US5018204A | Portable musical instrument amplifier | Physics | 15 | Expired |
| US9607494B2 | Supervised interconnect smoke alarm system and method of using same | Physics | 13 | Active |
| US6938533B2 | Blast attenuation container | Performing Operations; Transporting | 10 | Expired |
| US4547813A | Apparatus for controlling light distribution in line scan optical imaging systems | Electricity | 9 | Expired |
| US4899115A | System for controlling the dynamic range of electric musical instruments | Electricity | 8 | Expired |
| US5008634A | System for controlling the dynamic range of electric musical instruments | Electricity | 5 | Expired |
| US11705097B2 | Battery powered devices with electrically isolated outputs | Emerging Cross-Sectional Technologies | 5 | Active |
| US10706828B2 | Power plate pedal board for musical instrument electronics | Emerging Cross-Sectional Technologies | 5 | Active |
| US10962493B2 | Nanofiber smoke detection calibration | Physics | 1 | Active |
| US4575201A | Method and apparatus for producing folded optical path devices | Physics | 0 | Expired |
| US12211471B2 | DC power control devices with electrically isolated outputs | Emerging Cross-Sectional Technologies | 0 | Active |
| US12218384B2 | Extended life battery cell | Emerging Cross-Sectional Technologies | 0 | Active |
| US11423761B2 | Connected monitoring system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.