Inventor
LUDWIG CHRISTOPHER
US31 patents
⚠️ This page may combine multiple inventors who share the name “LUDWIG CHRISTOPHER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HARMAN INT IND
14 patentsUS10904656B2Jan 26, 2021
Vehicle speaker arragement
HARMAN INT IND4 citations70
US11503401B2Nov 15, 2022
Dual-zone automotive multimedia system
HARMAN INT IND2 citations68
US11134353B2Sep 28, 2021
Customized audio processing based on user-specific and hardware-specific audio information
HARMAN INT IND6 citations68
US10631081B2Apr 21, 2020
Venting system for vehicle speaker assembly
HARMAN INT IND2 citations67
US11729549B2Aug 15, 2023
Voice ducking with spatial speech separation for vehicle audio system
HARMAN INT IND1 citations62
US12447884B2Oct 21, 2025
Vehicle headrest assembly with configurable speaker modules and control for multiple audio modes
HARMAN INT IND0 citations60
US12095828B2Sep 17, 2024
In-vehicle communications and media mixing
HARMAN INT IND0 citations57
US11958345B2Apr 16, 2024
Augmented media experience in a vehicle cabin
HARMAN INT IND0 citations56
US11453333B2Sep 27, 2022
Moodroof for augmented media experience in a vehicle cabin
HARMAN INT IND1 citations56
US11133024B2Sep 28, 2021
Biometric personalized audio processing system
HARMAN INT IND0 citations52
US10531194B2Jan 7, 2020
Vehicle speaker arrangement
HARMAN INT IND0 citations49
US11463813B2Oct 4, 2022
Asymmetric acoustical implementation for improving a listening experience for a driver in a vehicle
HARMAN INT IND0 citations47
US11974103B2Apr 30, 2024
In-car headphone acoustical augmented reality system
HARMAN INT IND0 citations45
US12452569B2Oct 21, 2025
Modular audio assembly for use with vehicle headrest
HARMAN INT IND0 citations44
ILLINOIS TOOL WORKS
6 patentsUS11014718B2May 25, 2021
Flexible ball valve for liquid metering and dispensing
ILLINOIS TOOL WORKS2 citations73
US11214416B2Jan 4, 2022
Bubble valve for flexible packaging
ILLINOIS TOOL WORKS4 citations71
US11370584B2Jun 28, 2022
Multi-chamber pouch and valves
ILLINOIS TOOL WORKS5 citations65
US11130617B2Sep 28, 2021
Three-chamber bubble valve
ILLINOIS TOOL WORKS2 citations64
US11845588B2Dec 19, 2023
Pouch enclosure with filling slit
ILLINOIS TOOL WORKS0 citations62
US9533811B2Jan 3, 2017
Container carrier
ILLINOIS TOOL WORKS0 citations52
LUDWIG CHRISTOPHER
6 patentsUS10988295B1Apr 27, 2021
Pouch flip-top for bubble valve applications
LUDWIG CHRISTOPHER2 citations72
US8126187B2Feb 28, 2012
Vehicle audio system including door-mounted components
LUDWIG CHRISTOPHER5 citations61
US8204244B2Jun 19, 2012
Spare tire cover-mounted loudspeaker
LUDWIG CHRISTOPHER3 citations53
US9253562B2Feb 2, 2016
Vehicle loudspeaker module
LUDWIG CHRISTOPHER1 citations51
US9004279B2Apr 14, 2015
Pill container carrier
LUDWIG CHRISTOPHER0 citations51
US9376245B2Jun 28, 2016
Container carrier
LUDWIG CHRISTOPHER0 citations45