P

Inventor

YOSHIDA TOMOAKI

JP52 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA TOMOAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

27 patents
US9236971B2Jan 12, 2016

Bandwidth allocation device and bandwidth allocation method

NIPPON TELEGRAPH & TELEPHONE2 citations62
US7881414B2Feb 1, 2011

Bit rate discrimination circuit based on a low frequency component of signal

NIPPON TELEGRAPH & TELEPHONE4 citations62
US12355493B2Jul 8, 2025

Signal converting apparatus and signal converting method

NIPPON TELEGRAPH & TELEPHONE0 citations60
US12308890B2May 20, 2025

Optical power reception apparatus, communication apparatus and optical power reception method

NIPPON TELEGRAPH & TELEPHONE0 citations59
US12389141B2Aug 12, 2025

Optical communication system, control method and optical subscriber line terminal apparatus

NIPPON TELEGRAPH & TELEPHONE0 citations57
US11863230B2Jan 2, 2024

Communication apparatus and error detection method

NIPPON TELEGRAPH & TELEPHONE0 citations54
US12368517B2Jul 22, 2025

Optical power supply system, power receiving side optical communication device and power supply method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12316385B2May 27, 2025

Optical power supply system, wakeup method and optical communication device on the receiving side

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12294415B2May 6, 2025

Optical power supply system, power receiving side optical communication device and data transfer method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12267151B2Apr 1, 2025

Communication network terminating device, communication system, signal jamming method and signal jamming program

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12224795B2Feb 11, 2025

Optical transmission system and transmission quality monitoring method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12155411B2Nov 26, 2024

Optical transmission apparatus and optical transmission method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US11929787B2Mar 12, 2024

Optical transmission apparatus and optical transmission method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US9780867B2Oct 3, 2017

Optical communication system and optical communication abnormality-recovery method

NIPPON TELEGRAPH & TELEPHONE0 citations51
US12381633B2Aug 5, 2025

Optical power supply system, optical power supply method and power receiving optical communication apparatus

NIPPON TELEGRAPH & TELEPHONE0 citations50
US12283990B2Apr 22, 2025

Optical communication system

NIPPON TELEGRAPH & TELEPHONE0 citations48
US12199671B2Jan 14, 2025

Optical transmission system and optical transmission method

NIPPON TELEGRAPH & TELEPHONE0 citations48
US11949460B2Apr 2, 2024

Optical communication system, optical line termination apparatus and optical communication control method

NIPPON TELEGRAPH & TELEPHONE0 citations48
US12353199B2Jul 8, 2025

Communication apparatus and temperature monitoring method

NIPPON TELEGRAPH & TELEPHONE0 citations44
US10211945B2Feb 19, 2019

Station-side device and wavelength changeover monitoring method

NIPPON TELEGRAPH & TELEPHONE0 citations42
US10211944B2Feb 19, 2019

Station-side device and communication method

NIPPON TELEGRAPH & TELEPHONE0 citations41
US10009137B2Jun 26, 2018

Optical communication system, station-side device, subscriber device, and optical communication method

NIPPON TELEGRAPH & TELEPHONE0 citations41
US9871614B2Jan 16, 2018

WDM/TDM-PON system and transmission start time correction method thereof

NIPPON TELEGRAPH & TELEPHONE0 citations41
US9768908B2Sep 19, 2017

Protection method and optical communication system

NIPPON TELEGRAPH & TELEPHONE0 citations41
US9749079B2Aug 29, 2017

Optical system, and dynamic wavelength bandwidth allocation method for optical system

NIPPON TELEGRAPH & TELEPHONE0 citations41
US7936842B2May 3, 2011

Automatic bit rate control circuit

NIPPON TELEGRAPH & TELEPHONE0 citations41
US10361807B2Jul 23, 2019

Station-side device and wavelength control method

NIPPON TELEGRAPH & TELEPHONE0 citations40

OKI ELECTRIC IND CO LTD

7 patents

RICOH KK

3 patents

SHOWA DENKO KK

2 patents

AISIN FUKUI CORP

2 patents

NTT INC

2 patents

ASAHI KASEI FIBERS CORP

1 patent

INABA FUMIO

1 patent

ENBISHI ALUMINUM WHEELS CO LTD

1 patent

FOUNDATION ASSN OF JAPAN GENER

1 patent

KENWOOD CORP

1 patent

SEKIGUCHI SATORU

1 patent

NIPPON STEEL CHEMICAL CO

1 patent

Showing the top 50 of 52 patents by PatentIndex Score.