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Inventor

Takefumi Yokokura

Inventor
Kasama, JP

Overview

4→
Patents
1995–2013
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties33%
B01DSeparation11%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry11%
C07CAcyclic or carbocyclic compounds11%
H01JElectric discharge tubes or discharge lamps11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
8,496,819'Separation column for liquid chromatograph apparatus and liquid chromatograph apparatus using thereof'20138,319,194'Drug detection equipment'20128,123,496'Two-unit pump for liquid chromatograph with flow sensor arrangement'20125,378,635'Method of measuring a catecholamine and its metabolite'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995Based in Tomobe, JP· patent location history
2012–2013Patents assigned to HITACHI HIGH TECH CORP (3)· patent assignee history
2012–2013Patents assigned to YOKOKURA TAKEFUMI (3)· patent assignee history
2012–2013Patents assigned to ISHII KIMIHIKO (2)· patent assignee history
2012–2013Patents assigned to ITO MASAHITO (2)· patent assignee history
2012–2013Based in Kasama, JP· patent location history
2013Patents assigned to DEGUCHI KISABURO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI HIGH TECH CORP32012–2013
YOKOKURA TAKEFUMIself32012–2013
ISHII KIMIHIKO22012–2013
ITO MASAHITO22012–2013
DEGUCHI KISABURO12013
Locations
LocationPatentsSpan
Kasama, JP32012–2013
Tomobe, JP11995