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Inventor

Hitoshi Hatayama

Inventor
Yokohama, JP

Overview

17→
Patents
2001–2013
Patent span
Physics
Primary field (CPC G)

Patents· 17 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus37%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%
H04BTransmission17%
H04JMultiplex communication11%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light6%
B23KSoldering or unsoldering3%
C12NMicroorganisms or enzymes3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
PatentTitleYear
8,546,722'Laser processing apparatus and processing method employed therein'20137,829,335'Method of differentiation induction to osteoblasts'20107,085,446'Optical multi/demultiplexer'20067,027,215'Optical component, optical amplification module, and optical transmission system'20066,952,309'Optical amplifier and optical amplification method'20056,829,407'Planar optical circuit and optical transmission system'20046,819,859'Planar lightwave circuit type variable optical attenuator'20046,782,168'Apparatus for and method of monitoring wavelength multiplexed signal light as well as optical transmission system using the same'20046,701,090'Wavelength division multiplexing signal number monitoring apparatus and method'20046,643,431'Optical device and control method thereof'20036,633,698'Optical filter'20036,560,381'Optical filter'20036,507,680'Planar lightwave circuit module'20036,333,807'Optical filter'20016,332,055'Optical attenuator, plane waveguide type optical circuit having the same and optical attenuation system having the same'20016,269,211'Optical plane waveguide'20016,169,837'Dispersion-flattened optical fiber'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2013Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (17)· patent assignee history
2001–2013Based in Yokohama, JP· patent location history
2001–2006Based in Kanagawa, JP· patent location history
2013Patents assigned to HASEGAWA TAKEMI (1)· patent assignee history
2013Patents assigned to HATAYAMA HITOSHI (1)· patent assignee history
2013Patents assigned to INOUE AKIRA (1)· patent assignee history
2013Patents assigned to KOHDA HIROSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO ELECTRIC INDUSTRIES172001–2013
HASEGAWA TAKEMI12013
HATAYAMA HITOSHIself12013
INOUE AKIRA12013
KOHDA HIROSHI12013
Locations
LocationPatentsSpan
Yokohama, JP152001–2013
Kanagawa, JP22001–2006