LexDanaLexDanabeta
Inventor

Yuichi Akiyama

Inventor
Kawasaki, JP

Overview

73→
Patents
1986–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 73 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary
H04BTransmission50%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein18%
H04JMultiplex communication13%
H04LTransmission of digital information, e.g. telegraphic communication5%
H04QSelecting5%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for3%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application1%
G02BOptical elements, systems or apparatus1%
G08CTransmission systems for measured values, control or similar signals1%
H03CModulation1%
PatentTitleYear
10,873,410Reception device and method of detecting supervisory control signal202010,498,459Optical transmitter and skew compensation method201910,419,263Transmission system and method201910,341,027Optical transmitter and control method for optical transmitter201910,219,049Optical reception apparatus, optical transmission apparatus, optical communication system, and skew adjusting method201910,090,927Digital signal processing circuit and signal processing device that includes a plurality of digital signal processing circuits201810,063,322Optical transmitter and control method of optical transmitter20189,989,786Optical transmission device, optical modulator, and bias control method20189,887,798'Transmission apparatus, reception apparatus and modulation method'20189,859,985'Optical transmitter, optical transmission system and optical communication control method'20189,853,739Optical transmitter and method for controlling bias of optical modulator20179,843,396'Optical transmitter, method for controlling optical modulator, and controller for optical modulator'20179,787,396'Optical transmission device, transmission system, and transmission method'20179,667,344'Optical transmission apparatus and detection apparatus'20179,654,216'Optical transmitter and waveform distortion correction method'20179,654,224'Optical transmission device, nonlinear distortion compensation method, and nonlinear distortion pre-equalization method'20179,564,975'Optical transmission device, method of optical transmission, and non-transitory computer-readable medium'20179,419,720'Optical signal transmitter'20169,350,455'Optical transmitter and bias control method of optical modulator'20169,240,838'Optical transmitter and method for controlling bias for optical modulator'20169,130,680'Optical transmitter and modulated optical signal generating method'20159,014,572'Optical transmitter, control method for the same, and optical transmission system'20158,879,925'Optical transmitter and optical transmission method'20148,867,927'Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them'20148,731,409'Method for controlling polarization multiplexed optical signal'20148,582,980'Optical device and optical modulation method'20138,582,981'Optical transmitter and control method therefor'20138,565,616'Polarized-wave-multiplexing optical transmitter and control method of polarized-wave-multiplexed optical signal'20138,472,810'Optical signal transmitter and method for controlling polarization multiplexed optical signal'20138,457,503'Optical transmitter apparatus'20138,412,047'Polarization multiplexed light transmitter and control method thereof'20138,400,702'Optical modulation device and optical modulation method'20138,364,038'Polarization multiplexed optical transmitter and method for controlling polarization multiplexed optical signal'20138,285,152'DQPSK optical receiver'20128,249,464'Optical receiver and method for optical reception'20128,165,465'Apparatus and method of controlling tap coefficient of transversal filer, optical receiver apparatus, and optical communication system'20128,145,072'DQPSK optical receiver'20128,145,071'Electrical-dispersion compensating apparatus, optical receiving apparatus, and optical receiving method'20128,145,069'Optical transmitter'20128,131,152'Optical add/drop multiplexer'20128,121,492'Optical transmitting apparatus'20127,945,173'Control apparatus and control method for optical modulator'20117,936,998'Optical transmitter apparatus'20117,933,519'Optical cross-connect using wavelength selective switches'20117,907,324'Optical modulator and controlling method and apparatus thereof'20117,873,283'Method of monitoring optical signal to noise ratio and optical transmission system using the same'20117,853,148'Optical add/drop multiplexer'20107,848,659'Optical transmitting apparatus and optical communication system'20107,817,923'Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them'20107,792,428'Optical add/drop multiplexer'20107,773,283'Optical modulation device and optical modulation method'20107,734,192'Control apparatus and control method for optical modulator'20107,720,383'Optical transmission apparatus having OADM function'20107,711,270'Optical node and optical add/drop multiplexer'20107,657,190'Optical transmitter apparatus'20107,603,007'Quadrature phase-shift keying modulator and phase shift amount controlling method for the same'20097,505,414'Network designing device and computer-readable medium'20097,418,211'Control apparatus and control method for optical modulator'20087,382,979'Wavelength dispersion compensation design method and a system thereof'20087,321,736'Optical receiving station, optical communication system, and dispersion controlling method'20087,035,548'Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method'20067,006,770'Optical receiving station, optical communication system, and dispersion controlling method'20066,809,849'Control apparatus and control method for an optical method'20046,728,491'Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method'20046,661,974'Optical transmitter and optical transmission system'20036,262,828'Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line'20015,982,530'Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line'19995,973,816'Method and apparatus of driving an optical modulator to measure, and compensation for dispersion in an optical transmission line'19995,633,537'Multiplex transmission apparatus'19975,629,495'Waterproof box-like casing'19975,550,830'Multiplex transmission apparatus and method'19965,483,517'Multiplex transmission apparatus'19964,614,230'Heat exchanger'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Based in Tokyo, JP· patent location history
1996–1997Based in Kure, JP· patent location history
1996Based in Hiroshima, JP· patent location history
1997Based in Aki-gun, JP· patent location history
1999–2020Patents assigned to FUJITSU LTD (68)· patent assignee history
1999–2020Based in Kawasaki, JP· patent location history
2012–2015Patents assigned to AKIYAMA YUICHI (19)· patent assignee history
2012–2013Patents assigned to TANAKA TOSHIKI (9)· patent assignee history
2012–2014Patents assigned to HOSHIDA TAKESHI (5)· patent assignee history
2012–2013Patents assigned to MIYATA HIDEYUKI (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD681999–2020
AKIYAMA YUICHIself192012–2015
TANAKA TOSHIKI92012–2013
HOSHIDA TAKESHI52012–2014
MIYATA HIDEYUKI42012–2013
Locations
LocationPatentsSpan
Kawasaki, JP681999–2020
Kure, JP21996–1997
Aki-gun, JP11997
Hiroshima, JP11996
Tokyo, JP11986