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Inventor

Masao Kariya

Inventor
Ibaraki, JP

Overview

6→
Patents
2002–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 6 as inventor

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

E02Fprimary
E02FDredging19%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles13%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general13%
F15BSystems acting by means of fluids in general13%
F01PCooling of machines or engines in general6%
F02BInternal-combustion piston engines6%
F02DControlling combustion engines6%
LOC126%
Y02ATechnologies for adaptation to climate change6%
Y02TClimate change mitigation technologies related to transportation6%
PatentTitleYear
D0875143Excavator202010,487,476Construction machine201910,450,721Construction machine201910,309,081Construction machine20196,691,510'Pipe breakage control valve device'20046,409,142'Pipe breakage control valve device'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2004Patents assigned to HITACHI CONSTRUCTION MACHINERY (2)· patent assignee history
2002–2004Based in Tsuchiura, JP· patent location history
2019–2020Patents assigned to HITACHI CONSTRUCTION MACH CO (3)· patent assignee history
2019–2020Based in Ibaraki, JP· patent location history
2019Based in Tsukuba, JP· patent location history
2020Patents assigned to HITACHI CONTRUCTION MACHINERY CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI CONSTRUCTION MACH CO32019–2020
HITACHI CONSTRUCTION MACHINERY22002–2004
HITACHI CONTRUCTION MACHINERY CO LTD12020
Locations
LocationPatentsSpan
Ibaraki, JP32019–2020
Tsuchiura, JP22002–2004
Tsukuba, JP12019