Inventor
KATSURA KOJI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “KATSURA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM CO LTD
11 patentsUS10562438B2Feb 18, 2020
Light-emitting element driving semiconductor integrated circuit, light-emitting element driving device, light-emitting device, and vehicle
ROHM CO LTD7 citations82
US12082319B2Sep 3, 2024
LED driving device, lighting device, and vehicle-mounted display device
ROHM CO LTD3 citations73
US12446132B2Oct 14, 2025
LED driving device, LED light source device, and vehicle onboard display device
ROHM CO LTD0 citations61
US12069783B2Aug 20, 2024
Led driving device, lighting device, and vehicle-mounted display device
ROHM CO LTD0 citations61
US11672063B2Jun 6, 2023
LED driving device, lighting device, and vehicle-mounted display device
ROHM CO LTD0 citations61
US11412594B2Aug 9, 2022
LED driving device, lighting device, and vehicle-mounted display device
ROHM CO LTD0 citations61
US11864282B2Jan 2, 2024
Light-emitting element driving device
ROHM CO LTD0 citations50
US9980331B2May 22, 2018
Oscillation circuit
ROHM CO LTD0 citations50
US9226350B2Dec 29, 2015
Oscillation circuit
ROHM CO LTD1 citations50
US10820385B2Oct 27, 2020
LED drive circuit, LED drive device, and LED drive system
ROHM CO LTD0 citations40
US10405386B2Sep 3, 2019
Light emitting element driving apparatus and driving method thereof
ROHM CO LTD0 citations40