Inventor
TACHI RYOSUKE
JP33 patents
⚠️ This page may combine multiple inventors who share the name “TACHI RYOSUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ALPINE CO LTD
19 patentsUS11805367B2Oct 31, 2023
Speaker
ALPS ALPINE CO LTD2 citations71
US12035115B2Jul 9, 2024
Speaker distortion correction device
ALPS ALPINE CO LTD4 citations70
US12513440B2Dec 30, 2025
Speaker
ALPS ALPINE CO LTD0 citations62
US11622195B2Apr 4, 2023
Active noise control system utilizing noise cancellation sounds
ALPS ALPINE CO LTD1 citations60
US12262194B2Mar 25, 2025
Dynamic acoustic control systems and methods
ALPS ALPINE CO LTD1 citations54
US12499743B2Dec 16, 2025
Signal processing for haptic seating systems
ALPS ALPINE CO LTD0 citations52
US12464284B2Nov 4, 2025
Communication support system
ALPS ALPINE CO LTD0 citations52
US12356145B2Jul 8, 2025
Speaker displacement detection calibration method and speaker displacement detection apparatus
ALPS ALPINE CO LTD0 citations52
US12112733B2Oct 8, 2024
Communication support system
ALPS ALPINE CO LTD0 citations52
US11956604B2Apr 9, 2024
In-vehicle communication support system
ALPS ALPINE CO LTD0 citations52
US11922916B2Mar 5, 2024
Active noise control system
ALPS ALPINE CO LTD0 citations52
US11756523B2Sep 12, 2023
Active noise control system
ALPS ALPINE CO LTD0 citations52
US11482204B2Oct 25, 2022
Active noise control system
ALPS ALPINE CO LTD0 citations50
US11462202B2Oct 4, 2022
Active noise control system based on head position
ALPS ALPINE CO LTD0 citations50
US11462203B2Oct 4, 2022
In-vehicle communication support system
ALPS ALPINE CO LTD0 citations50
US11462205B2Oct 4, 2022
In-vehicle communication support system
ALPS ALPINE CO LTD0 citations50
US11463808B2Oct 4, 2022
Active noise control system
ALPS ALPINE CO LTD0 citations50
US12394403B2Aug 19, 2025
Active noise control system
ALPS ALPINE CO LTD0 citations48
US12052549B2Jul 30, 2024
Speaker
ALPS ALPINE CO LTD0 citations47
ALPINE ELECTRONICS INC
6 patentsUS11335314B2May 17, 2022
Active noise control system comprising auxiliary filter selection based on object position
ALPINE ELECTRONICS INC1 citations60
US10854187B2Dec 1, 2020
Active noise control system and on-vehicle audio system
ALPINE ELECTRONICS INC1 citations60
US11501748B2Nov 15, 2022
Active noise control system
ALPINE ELECTRONICS INC0 citations52
US11043202B2Jun 22, 2021
Active noise control system, setting method of active noise control system, and audio system
ALPINE ELECTRONICS INC0 citations50
US11276385B2Mar 15, 2022
Noise reduction device, vehicle, noise reduction system, and noise reduction method
ALPINE ELECTRONICS INC0 citations43
US10109295B2Oct 23, 2018
Audio processing apparatus and audio processing method
ALPINE ELECTRONICS INC0 citations41
NIPPON DENSO CO
4 patentsUS4730256AMar 8, 1988
Electronic control apparatus including microcomputers for controlling some of the systems found in a vehicle
NIPPON DENSO CO52 citations92
US4883033ANov 28, 1989
Ignition timing control system for internal combustion engines
NIPPON DENSO CO16 citations71
US4584978AApr 29, 1986
Method and apparatus for controlling spark timing in internal combustion engines
NIPPON DENSO CO15 citations71
US4519038AMay 21, 1985
Optimizing spark timing control apparatus and method
NIPPON DENSO CO18 citations68