P

Inventor

HIRANO AKIRA

JP112 patents
⚠️ This page may combine multiple inventors who share the name “HIRANO AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

14 patents
US6865348B2Mar 8, 2005

Optical transmission method, optical transmitter, optical receiver, and optical transmission system

NIPPON TELEGRAPH & TELEPHONE70 citations96
US7536108B2May 19, 2009

High precision chromatic dispersion measuring method and automatic dispersion compensating optical link system that uses this method

NIPPON TELEGRAPH & TELEPHONE30 citations92
US7116917B2Oct 3, 2006

Optical transmitter and optical transmission system

NIPPON TELEGRAPH & TELEPHONE32 citations92
US6763197B1Jul 13, 2004

Optical transmitter and optical transmitter control method using variable duty ratio setting and alternate phase inversion for optical clock pulses

NIPPON TELEGRAPH & TELEPHONE33 citations92
US11159242B2Oct 26, 2021

Optical transmitter

NIPPON TELEGRAPH & TELEPHONE9 citations85
US8005374B2Aug 23, 2011

Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system

NIPPON TELEGRAPH & TELEPHONE10 citations83
US7734194B2Jun 8, 2010

Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system

NIPPON TELEGRAPH & TELEPHONE16 citations83
US6983085B2Jan 3, 2006

Optical transmission circuit

NIPPON TELEGRAPH & TELEPHONE12 citations82
US11546064B2Jan 3, 2023

Optical transmission system and transmission mode selecting method

NIPPON TELEGRAPH & TELEPHONE4 citations73
US11516073B2Nov 29, 2022

Malfunction point estimation method and malfunction point estimation apparatus

NIPPON TELEGRAPH & TELEPHONE3 citations72
US10823989B2Nov 3, 2020

Bias control circuit and bias control method

NIPPON TELEGRAPH & TELEPHONE4 citations72
US10615868B2Apr 7, 2020

Communication system and fault detection method

NIPPON TELEGRAPH & TELEPHONE4 citations72
US10511381B2Dec 17, 2019

Communication system and fault location specifying method

NIPPON TELEGRAPH & TELEPHONE4 citations72
US10313015B2Jun 4, 2019

Optical transmitter and bias voltage control method

NIPPON TELEGRAPH & TELEPHONE6 citations72

OSAKA GAS CO LTD

6 patents

ASAHI GLASS CO LTD

5 patents

NEC CORP

5 patents

SOKO KAGAKU CO LTD

5 patents

HONDA MOTOR CO LTD

4 patents

NIPPON ELECTRIC CO

2 patents

FUJITSU LTD

1 patent

MASAOKA SHINYA

1 patent

UV CRAFTORY CO LTD

1 patent

PERNOT CYRIL

1 patent

ASAHI GLASS COMPANY INC

1 patent

TAKARA HIDEHIKO

1 patent

KONISHIROKU PHOTO IND

1 patent

AMANO HIROSHI

1 patent

HIRANO AKIRA

1 patent

Showing the top 50 of 112 patents by PatentIndex Score.