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Inventor

Toshikazu Okubo

Inventor
Tokyo, JP

Overview

11→
Patents
1986–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 11 as inventor

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

C25Dprimary
C25DProcesses for the electrolytic or electrophoretic production of coatings23%
G01NInvestigating or analysing materials by determining their chemical or physical properties15%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems12%
H05KPrinted circuits12%
B60LPropulsion of electrically-propelled vehicles8%
C23CCoating metallic material8%
Y02TClimate change mitigation technologies related to transportation8%
B23KSoldering or unsoldering4%
C22CAlloys4%
H01LSemiconductor devices4%
PatentTitleYear
10,605,771Electroplating solution analyzer and electroplating solution analysis method202010,557,819Electrolytic copper plating solution analyzer, and electrolytic copper plating solution analysis method20209,883,586'Wiring substrate for bonding using solder having a low melting point and method for manufacturing same'20189,572,252'Wiring substrate and method of manufacturing wiring substrate'20178,440,555'Method for analyzing electrolytic copper plating solution'20138,203,322'DC-DC converter'20127,936,573'Bi-directional DC-DC converter and control method'20117,820,535'Method for analyzing copper electroplating solution, apparatus for the analysis, and method for fabricating semiconductor product'20107,692,935'Bi-directional DC-DC converter and control method'20106,156,218'Method of pretreatment for electroless nickel plating'20004,614,568'High-speed silver plating and baths therefor'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Based in Toda, JP· patent location history
2000Patents assigned to JAPAN ENERGY CORP (1)· patent assignee history
2000Based in Ibaraki, JP· patent location history
2010–2020Patents assigned to TOPPAN PRINTING CO LTD (6)· patent assignee history
2010–2012Patents assigned to HITACHI LTD (3)· patent assignee history
2010–2020Based in Tokyo, JP· patent location history
2010–2011Based in Hitachinaka, JP· patent location history
2012–2013Patents assigned to OKUBO TOSHIKAZU (2)· patent assignee history
2012Based in Hitachi, JP· patent location history
2013Patents assigned to NAOI KATSUYOSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOPPAN PRINTING CO LTD62010–2020
HITACHI LTD32010–2012
OKUBO TOSHIKAZUself22012–2013
JAPAN ENERGY CORP12000
NAOI KATSUYOSHI12013
Locations
LocationPatentsSpan
Tokyo, JP62010–2020
Hitachinaka, JP22010–2011
Hitachi, JP12012
Ibaraki, JP12000
Toda, JP11986