Inventor

Tadashi Ikeuchi

Inventor

Plano, TX, US

Overview

71→

Patents

1995–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 71 as inventor

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

H04Bprimary

H04BTransmission27%

H04JMultiplex communication16%

H04LTransmission of digital information, e.g. telegraphic communication13%

H04QSelecting8%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light6%

H05KPrinted circuits5%

G02BOptical elements, systems or apparatus3%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%

G06FElectric digital data processing2%

PatentTitleYear

11,032,004Optical system for compensating for signal loss2021 11,012,187Error correction in optical networks with probabilistic shaping and symbol rate optimization2021 11,011,056Fragmentation-aware intelligent autonomous intersection management using a space-time resource model2021 10,847,945Phase shifter for an optical phase-sensitive amplifier2020 10,841,202Distribution of computing resources of a radio access network2020 10,700,807Fiber input power selection for probabilistically shaped signals in optical networks2020 10,636,297Cooperative autonomous driving for traffic congestion avoidance2020 10,601,517Probabilistic shaping on eight-dimensional super-symbols2020 10,547,563Efficient message forwarding for distributed resource orchestration2020 10,530,490Probabilistic constellation shaping for optical networks with diverse transmission media2020 10,523,334Controlling gain modulation in optical communication networks2019 10,511,388Reducing variance in reach of WDM channels in an optical network2019 10,498,102Optical phase-sensitive amplifier with signal noise removal2019 10,461,881Method and system for assigning modulation format in optical networks2019 10,432,537Service function chaining based on resource availability in the time dimension2019 10,432,552Just-enough-time provisioning of service function chain resources2019 10,396,899Probabilistic constellation shaping using set-partitioned M-QAM2019 10,389,473Reach extension for optical networks through control of modulation formats and numbers of subcarriers2019 10,355,779Virtual optical network service with guaranteed availability2019 10,349,154Intra data center optical switching2019 10,348,439Spectral slot assignment and placement of wavelength shifters in flexible grid optical networks2019 10,341,201Cross-domain orchestration of switch and service functions2019 10,243,688Reach extension of multi-carrier channels using unequal subcarrier spacing2019 10,243,835Seamless service function chaining across domains2019 10,230,661Distributed virtual network embedding2019 10,225,008Systems and methods for reconfiguring an adaptive optical network when adding an optical path2019 10,148,552Shortest path search with constraints in networks2018 10,116,392Carrier suppressed multi-level pulse amplitude modulation2018 10,097,376Resilient virtual optical switches over less reliable optical networks2018 10,090,961Multi-channel optical cross-phase modulation compensator2018 10,063,317Network management with per-node cross-phase-modulation (XPM) compensation2018 10,050,738Low noise colorless, directionless, contentionless reconfigurable optical add/drop multiplexer2018 10,038,496Method for determining optical network utilization efficiency2018 9,997,887Optical phase-sensitive amplifier with fiber bragg grating phase shifter2018 9,998,563Vertex-centric service function chaining in multi-domain networks2018 9,973,383Placement of wavelength shifters in optical networks2018 9,967,054Optimization of networks carrying superchannels with different modulation formats2018 9,967,053Shortest minimum regeneration path search in networks2018 9,838,123Nonlinear noise mitigation with spectral inversion in optical transport networks2017 9,673,907'Constellation shaping of modulation formats for optical communication systems'2017 9,083,467'Optical transmission apparatus and optical transmission method'2015 8,891,975'Optical receiver and optical transmitter'2014 8,737,848'Optical receiver'2014 8,491,316'Connection terminal and transmission line'2013 8,306,439'Communication apparatus and signal reception method'2012 8,283,565'Flexible substrate'2012 8,257,094'Connection terminal and transmission line'2012 8,178,788'Electronic component package'2012 7,864,892'Control method and apparatus for receiving optical signal'2011 7,734,188'Deskew device and deskew method'2010 7,696,628'Relay substrate and substrate assembly'2010 7,609,982'RZ-DPSK optical receiver circuit'2009 7,532,824'Driving method of optical modulator, and optical transmitter and optical transmission system using same'2009 7,443,279'Coil package and bias tee package'2008 7,444,085'DQPSK optical receiver circuit'2008 7,436,056'Electronic component package'2008 7,279,778'Semiconductor package having a high-speed signal input/output terminal'2007 7,266,308'Light output control circuit'2007 7,264,405'Optical module'2007 7,200,343'Drive control apparatus and drive control method for optical modulator'2007 7,068,747'Data decision circuit using clock signal which has phase optimized with respect to phase of input data signal'2006 7,046,100'Direct current cut structure'2006 6,975,813'Light output control device'2005 6,795,656'Optical transmission circuit using a semiconductor laser'2004 6,728,495'Light output control circuit with a warning function of deteriorated light output'2004 6,597,485'Optical transmitter circuit'2003 6,292,284'Light emitting element driving apparatus'2001 6,282,216'Burst mode optical transmitter circuit'2001 5,708,673'Optical signal transmitter'1998 5,563,898'Semiconductor laser drive'1996 5,386,109'Pre-amplifier for optical receiving and optical receiver using the same'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2021Patents assigned to FUJITSU LTD (70)· patent assignee history

1995–2015Based in Kawasaki, JP· patent location history

2003Based in Sagamihara, JP· patent location history

2006Patents assigned to FUIJTSU LTD (1)· patent assignee history

2012–2014Patents assigned to IKEUCHI TADASHI (7)· patent assignee history

2012–2014Patents assigned to YAGISAWA TAKATOSHI (5)· patent assignee history

2012–2014Patents assigned to KUWATA NAOKI (2)· patent assignee history

2017–2021Based in Plano, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJITSU LTD	70	1995–2021
IKEUCHI TADASHIself	7	2012–2014
YAGISAWA TAKATOSHI	5	2012–2014
KUWATA NAOKI	2	2012–2014
FUIJTSU LTD	1	2006

Locations

Location	Patents	Span
Plano, Texas, US	40	2017–2021
Kawasaki, JP	30	1995–2015
Sagamihara, JP	1	2003