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Inventor

Toshikazu Hashimoto

Inventor
Atsugi, JP

Overview

24→
Patents
1990–2020
Patent span
Physics
Primary field (CPC G)

Patents· 24 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus50%
H04BTransmission14%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
G06FElectric digital data processing6%
H04JMultiplex communication6%
G11BInformation storage based on relative movement between record carrier and transducer3%
PatentTitleYear
10,797,817Optical signal processing device202010,649,144Optical multiplexing circuit20208,971,677'Optical 90-degree hybrid circuit'20158,737,779'Optical wavelength multi/demultiplexer'20148,649,640'Optical 90-degree hybrid circuit'20148,588,560'Optical 90-degree hybrid circuit'20138,554,040'Planar lightwave circuit, design method for wave propagation circuit, and computer program'20138,538,222'Planar lightwave circuit, design method for wave propagation circuit, and computer program'20138,483,525'Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication system'20138,463,097'Planar lightwave circuit, design method for wave propagation circuit, and computer program'20138,150,219'Waveguide-type optical interferometer'20127,899,279'Optical delay line interferometer'20117,856,163'Planar lightwave circuit, design method for wave propagation circuit, and computer program'20107,580,597'Optical functional circuit'20097,397,977'Wave transmission medium and waveguide circuit'20087,245,793'Optical waveguide circuit'20076,480,639'Optical module'20026,397,285'Image input device employing a personal computercard/interface or generic interface'20026,222,967'Packaging platform, optical module using the platform, and methods for producing the platform and the module'20016,164,836'Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platform'20006,128,670'Image input device employing a personal computercard/interface or generic interface'20006,027,254'Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platform'20005,621,837'Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit and process for fabricating platform'19974,977,470'Track-following control system for magnetic disk drive'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2007Based in Tokyo, JP· patent location history
1997–2020Patents assigned to NIPPON TELEGRAPH & TELEPHONE (20)· patent assignee history
1997–2000Based in Mito, JP· patent location history
2000Based in Ibaraki-shi, JP· patent location history
2008–2013Based in Yamato, JP· patent location history
2011–2020Based in Atsugi, JP· patent location history
2012–2015Patents assigned to HASHIMOTO TOSHIKAZU (9)· patent assignee history
2012–2015Patents assigned to SAKAMAKI YOHEI (9)· patent assignee history
2012–2015Patents assigned to TAKAHASHI HIROSHI (9)· patent assignee history
2013–2014Patents assigned to KITOH TSUTOMU (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON TELEGRAPH & TELEPHONE201997–2020
HASHIMOTO TOSHIKAZUself92012–2015
SAKAMAKI YOHEI92012–2015
TAKAHASHI HIROSHI92012–2015
KITOH TSUTOMU52013–2014
Locations
LocationPatentsSpan
Atsugi, JP92011–2020
Yamato, JP62008–2013
Tokyo, JP61990–2007
Mito, JP21997–2000
Ibaraki-shi, JP12000