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Inventor

Shigeru Nakagawa

Inventor
Tokyo, JP

Overview

45→
Patents
1983–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 45 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus14%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light10%
B82YSpecific uses or applications of nanostructures7%
F02DControlling combustion engines5%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h105%
Y02TClimate change mitigation technologies related to transportation5%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
Y10TTechnical subjects covered by former us classification5%
F02BInternal-combustion piston engines4%
H04BTransmission4%
PatentTitleYear
10,876,488Failure diagnosis device for in-cylinder pressure sensor202010,859,028Engine fuel injection control device202010,815,917Failure diagnosis device for in-cylinder pressure sensor202010,767,592Failure diagnosis device for in-cylinder pressure sensor202010,366,779Scheme of new materials201910,240,491Control system of engine201910,025,040Connector for multilayered optical waveguide20189,977,191Optical connecting method20189,952,392Optical module and method for manufacturing optical module20189,927,576'Optical modules for wavelength multiplexing'20189,720,190'Optical module and method for manufacturing optical module'20179,702,316'Spark-ignition direct injection engine'20179,523,816'Optical device and manufacturing method therefor'20169,484,482'Efficient optical (light) coupling'20169,429,711'Optical device, optical connector assembly, and optical connecting method'20169,389,366'Optical modules for wavelength multiplexing'20169,341,797'Optical module and method for manufacturing optical module'20169,304,255'Optical device and manufacturing method therefor'20169,274,288'Connector for multilayered optical waveguide'20168,542,963'Method for manufacturing optical coupling element, optical transmission substrate, optical coupling component, coupling method, and optical interconnect system'20138,442,362'Method for manufacturing optical coupling element, optical transmission substrate, optical coupling component, coupling method, and optical interconnect system'20137,923,275'Surface emitting laser and manufacturing method thereof'20117,911,686'Optical module and optical communication system'20117,501,294'VCSEL for high speed lower power optical link'20097,262,436'III-nitride semiconductor light emitting device having a silver p-contact'20076,973,238'Optical switch and optical communication system'20056,900,472'Semiconductor light emitting device having a silver p-contact'20056,841,407'Method for aperturing vertical-cavity surface-emitting lasers (VCSELs)'20056,810,064'Heat spreading layers for vertical cavity surface emitting lasers'20046,714,573'Contact scheme for intracavity-contacted vertical-cavity surface-emitting laser'20046,687,281'Double intracavity contacted long-wavelength VCSELs'20046,653,158'Double intracavity contacted long-wavelength VCSELs and method of fabricating same'20036,486,984'Wavelength monitor using hybrid approach'20026,375,255'Rear passenger seat in vehicle compartment'20026,239,490'P-contact for a Group III-nitride semiconductor device and method of making same'20016,194,743'Nitride semiconductor light emitting device having a silver p-contact'20015,729,567'Multilayer film structure and vertical cavity surface emitting lasers'19985,530,381'Integrated high-speed bipolar logic circuit method'19965,497,118'Signal selector circuit and signal-generating circuit'19965,402,016'Integrated high-speed bipolar logic circuit'19955,333,553'Carriers for linear motor vehicle-borne field magnets which straddle ground-side coils'19945,071,887'Polyurethane elastomer'19914,663,869'Display for displaying images in three dimensions'19874,643,912'Method for forming a metal layer with pattern on a substrate'19874,417,411'Information display device'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1987Patents assigned to MARUI IND (3)· patent assignee history
1987–2013Based in Kanagawa, JP· patent location history
1994–2019Based in Tokyo, JP· patent location history
1996–2018Based in Kawasaki, JP· patent location history
2001–2002Patents assigned to AGILENT TECHNOLOGIES INC (3)· patent assignee history
2001–2007Based in Goleta, CA, US· patent location history
2003–2005Patents assigned to UNIV CALIFORNIA (5)· patent assignee history
2009–2019Patents assigned to IBM (17)· patent assignee history
2017–2020Patents assigned to MAZDA MOTOR (6)· patent assignee history
2019–2020Based in Hiroshima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBM172009–2019
MAZDA MOTOR62017–2020
UNIV CALIFORNIA52003–2005
AGILENT TECHNOLOGIES INC32001–2002
MARUI IND31983–1987
Locations
LocationPatentsSpan
Tokyo, JP131994–2019
Goleta, California, US92001–2007
Kawasaki, JP61996–2018
Hiroshima, JP52019–2020
Kanagawa, JP31987–2013