Inventor
KUWABARA KEI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “KUWABARA KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
14 patentsUS11672462B2Jun 13, 2023
Measurement control apparatus and measurement control method
NIPPON TELEGRAPH & TELEPHONE0 citations61
US10918302B2Feb 16, 2021
Biological signal processing method and biological signal processing apparatus
NIPPON TELEGRAPH & TELEPHONE1 citations61
US10881315B2Jan 5, 2021
Biological signal measurement system, biological information measurement apparatus, and biological information extraction algorithm changing method
NIPPON TELEGRAPH & TELEPHONE1 citations60
US11324435B2May 10, 2022
Heartbeat detection method and heartbeat detection device
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11076793B2Aug 3, 2021
Respiration estimation method and apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations51
US10945623B2Mar 16, 2021
Heartbeat detection method and heartbeat detection device
NIPPON TELEGRAPH & TELEPHONE0 citations51
US12276552B2Apr 15, 2025
Wearable environmental sensor device and monitoring system
NIPPON TELEGRAPH & TELEPHONE0 citations50
US12174662B2Dec 24, 2024
Wearable sensor device and monitoring system
NIPPON TELEGRAPH & TELEPHONE0 citations50
US11957188B2Apr 16, 2024
Wearable device, and sensor device
NIPPON TELEGRAPH & TELEPHONE0 citations50
US11406309B2Aug 9, 2022
Heartbeat rate calculation device and method
NIPPON TELEGRAPH & TELEPHONE0 citations50
US11234613B2Feb 1, 2022
Respiration estimation method and apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations47
US10254625B2Apr 9, 2019
Optical signal processing device
NIPPON TELEGRAPH & TELEPHONE0 citations40
US10750969B2Aug 25, 2020
Heartbeat detection method and heartbeat detection device
NIPPON TELEGRAPH & TELEPHONE0 citations39
US10172531B2Jan 8, 2019
Heartbeat detection method and heartbeat detection device
NIPPON TELEGRAPH & TELEPHONE0 citations39
NTT INC
4 patentsUS12575762B2Mar 17, 2026
Wearable sensor and sweating analysis device
NTT INC0 citations61
US12484807B2Dec 2, 2025
Wearable sensor, perspiration analysis device and method
NTT INC0 citations50
US12458287B2Nov 4, 2025
Wearable sensor device
NTT INC0 citations50
US12527510B2Jan 20, 2026
Wearable environmental sensor device
NTT INC0 citations49