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 patentsUS9236971B2Jan 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 patentsUS4969087ANov 6, 1990
Single-chip microcomputer
OKI ELECTRIC IND CO LTD64 citations96
US5068783ANov 26, 1991
Microcomputer having a built-in prom for storing an optional program
OKI ELECTRIC IND CO LTD25 citations92
US4788454ANov 29, 1988
Power-on reset circuit
OKI ELECTRIC IND CO LTD29 citations92
US4901320AFeb 13, 1990
Self-correcting semiconductor memory device and microcomputer incorporating the same
OKI ELECTRIC IND CO LTD36 citations91
US5088027AFeb 11, 1992
Single-chip microcomputer
OKI ELECTRIC IND CO LTD9 citations73
US5062075AOct 29, 1991
Microcomputer having security memory using test and destruction routines
OKI ELECTRIC IND CO LTD15 citations73
US4875156AOct 17, 1989
Computer having a protection device to selectively block incorrect control signals
OKI ELECTRIC IND CO LTD15 citations73
RICOH KK
3 patentsUS5684523ANov 4, 1997
Optical line printhead and an LED chip used therefor
RICOH KK145 citations96
US5307200AApr 26, 1994
Semiconductor optical device having an optical confinement structure
RICOH KK26 citations92
US5091757AFeb 25, 1992
Semiconductor light emitting array with particular surfaces
RICOH KK26 citations92
SHOWA DENKO KK
2 patentsAISIN FUKUI CORP
2 patentsNTT INC
2 patentsASAHI KASEI FIBERS CORP
1 patentINABA FUMIO
1 patentENBISHI ALUMINUM WHEELS CO LTD
1 patentFOUNDATION ASSN OF JAPAN GENER
1 patentKENWOOD CORP
1 patentSEKIGUCHI SATORU
1 patentNIPPON STEEL CHEMICAL CO
1 patentShowing the top 50 of 52 patents by PatentIndex Score.