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Inventor

Daisuke Koizumi

Inventor
Kawasaki, JP

Overview

28→
Patents
2001–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 28 as inventor

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

G01Rprimary
G01RMeasuring electric variables18%
H01PWaveguides16%
H05KPrinted circuits13%
H01RElectrically-conductive connections10%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding6%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%
Y10TTechnical subjects covered by former us classification6%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h105%
H04BTransmission3%
H04WWireless communication networks3%
PatentTitleYear
10,681,735Wireless environment evaluation method and wireless communicaton system20208,671,557'Tray in combination with electronic component attaching tool attached to the tray'20148,428,651'Radio base station apparatus'20138,213,992'Radio base station apparatus'20128,051,554'IC socket with attached electronic component'20117,978,027'Coplanar waveguide resonator and coplanar waveguide filter using the same'20117,977,961'Component for testing device for electronic component and testing method of the electronic component'20117,825,676'Contactor and test method using contactor'20107,774,034'Signal switching device'20107,764,147'Coplanar resonator and filter using the same'20107,710,222'Dual band resonator and dual band filter'20107,564,699'Planar circuit housing'20097,518,388'Contactor for electronic components and test method using the same'20097,430,798'Electronic component attaching tool'20087,403,024'Contactor having contact electrodes of metal springs embedded in a plate-like structure'20087,397,331'Coupling structure, resonator excitation structure and filter for coplanar-waveguide circuit'20087,378,924'Filter with improved capacitive coupling portion'20087,309,996'Contactor for electronic components and test method using the same'20077,307,045'Signal switching device'20077,292,124'Variable resonator and variable phase shifter'20077,161,449'Coplanar waveguide resonator'20076,927,343'Contactor for testing miniaturized devices and components'20056,924,174'Method of attaching electronic component and electronic component attaching tool'20056,791,345'Contactor for testing semiconductor device and manufacturing method thereof'20046,774,650'Probe card and method of testing wafer having a plurality of semiconductor devices'20046,563,330'Probe card and method of testing wafer having a plurality of semiconductor devices'20036,410,354'Semiconductor substrate test device and method'20026,203,332'Attachment structure of semiconductor device socket'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2008Patents assigned to FUJITSU LTD (10)· patent assignee history
2001–2014Based in Kawasaki, JP· patent location history
2003–2004Based in Hino, JP· patent location history
2007–2013Patents assigned to NTT DOCOMO INC (12)· patent assignee history
2007–2013Based in Zushi, JP· patent location history
2010–2014Patents assigned to FUJITSU SEMICONDUCTOR LTD (4)· patent assignee history
2012–2014Patents assigned to KOIZUMI DAISUKE (3)· patent assignee history
2012–2013Patents assigned to MOTEGI MASAYUKI (2)· patent assignee history
2020Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NTT DOCOMO INC122007–2013
FUJITSU LTD102001–2008
FUJITSU SEMICONDUCTOR LTD42010–2014
KOIZUMI DAISUKEself32012–2014
MOTEGI MASAYUKI22012–2013
Locations
LocationPatentsSpan
Kawasaki, JP132001–2014
Zushi, JP122007–2013
Hino, JP22003–2004
Tokyo, JP12020