P

Inventor

TSURITANI TAKEHIRO

JP14 patents
⚠️ This page may combine multiple inventors who share the name “TSURITANI TAKEHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KDDI CORP

9 patents
US12554076B2Feb 17, 2026

Multi-core optical fiber connector

KDDI CORP0 citations54
US11245468B2Feb 8, 2022

Measurement apparatus of optical communication system

KDDI CORP0 citations52
US6744989B2Jun 1, 2004

Optical transmission system, its method, and optical amplification transmission line

KDDI CORP0 citations52
US7747167B2Jun 29, 2010

Wavelength service providing apparatus in all-optical network

KDDI CORP1 citations51
US7480458B2Jan 20, 2009

Link system for photonic cross connect and transmission apparatus

KDDI CORP1 citations51
US12506316B2Dec 23, 2025

Optical coupler and optical amplifier

KDDI CORP0 citations44
US11966083B2Apr 23, 2024

Communication device and communication system

KDDI CORP0 citations42
US11689295B2Jun 27, 2023

Reception apparatus and non-transitory computer readable medium

KDDI CORP0 citations42
US7903969B2Mar 8, 2011

Link connectivity verification method

KDDI CORP0 citations36

KDD CORP

2 patents
US6594428B1Jul 15, 2003

Dispersion compensating optical transmission line and system

KDD CORP27 citations92
US6768872B1Jul 27, 2004

Optical transmission system, optical transmission line and optical transmitter

KDD CORP9 citations73

KDDI SUBMARINE CABLE SYS INC

1 patent
US6754420B2Jun 22, 2004

Optical fiber transmission line

KDDI SUBMARINE CABLE SYS INC22 citations92

KDD SUBMARINE CABLE SYS INC

1 patent
US6640026B2Oct 28, 2003

Optical multiplexer and demultiplexer

KDD SUBMARINE CABLE SYS INC4 citations61

TSURITANI TAKEHIRO

1 patent
US8254782B2Aug 28, 2012

Optical signal quality monitoring apparatus

TSURITANI TAKEHIRO0 citations45