Christopher Ludwig
32Patents
8h-index
44Co-inventors
75Inventor score
Filing activity: Mar 10, 1995 → Aug 24, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6474684B1 | Dual stage inflator | Performing Operations; Transporting | 68 | Expired |
| US5551725A | Vehicle airbag inflator and related method | Chemistry; Metallurgy | 58 | Expired |
| US5780768A | Gas generating compositions | Chemistry; Metallurgy | 53 | Expired |
| US5739460A | Method of safely initiating combustion of a gas generant composition using an autoignition composition | Chemistry; Metallurgy | 40 | Expired |
| US6605233B2 | Gas generant composition with coolant | Chemistry; Metallurgy | 21 | Expired |
| US5959242A | Autoignition composition | Chemistry; Metallurgy | 19 | Expired |
| US7305097B2 | Controlling fading and surround signal level | Electricity | 16 | Expired |
| US6749702B1 | Low temperature autoignition composition | Chemistry; Metallurgy | 9 | Expired |
| US6235132A | Gas generating compositions | Chemistry; Metallurgy | 8 | Expired |
| US7483539B2 | Automobile audio system | Electricity | 6 | Expired |
| US6221187A | Method of safely initiating combustion of a gas generant composition using an autoignition composition | Chemistry; Metallurgy | 6 | Expired |
| US6101947A | Method of safety initiating combustion of a gas generant composition using autoignition composition | Chemistry; Metallurgy | 5 | Expired |
| US8126187B2 | Vehicle audio system including door-mounted components | Electricity | 5 | Active |
| US8175279B2 | Integrated vehicle audio system | Performing Operations; Transporting | 5 | Active |
| US6589375B2 | Low solids gas generant having a low flame temperature | Chemistry; Metallurgy | 4 | Expired |
| US10904656B2 | Vehicle speaker arragement | Electricity | 4 | Active |
| US10631081B2 | Venting system for vehicle speaker assembly | Electricity | 2 | Active |
| US8204244B2 | Spare tire cover-mounted loudspeaker | Electricity | 2 | Active |
| US7957540B2 | Automobile audio system | Electricity | 2 | Active |
| US11134353B2 | Customized audio processing based on user-specific and hardware-specific audio information | Electricity | 2 | Active |
| US7724909B2 | Automobile audio system | Electricity | 1 | Active |
| US9253562B2 | Vehicle loudspeaker module | Electricity | 1 | Active |
| US11453333B2 | Moodroof for augmented media experience in a vehicle cabin | Performing Operations; Transporting | 1 | Active |
| US11503401B2 | Dual-zone automotive multimedia system | Electricity | 1 | Active |
| US11729549B2 | Voice ducking with spatial speech separation for vehicle audio system | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.