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Inventor

Youichi Kowatari

Inventor
Kasumigaura, JP

Overview

11→
Patents
1998–2013
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 11 as inventor

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

E02Fprimary
E02FDredging38%
F16HGearing15%
B60WConjoint control of vehicle sub-units of different type or different function8%
F04BPositive-displacement machines for liquids8%
F15BSystems acting by means of fluids in general8%
G05GControl devices or systems insofar as characterised by mechanical features only8%
B29CShaping or joining of plastics4%
F02DControlling combustion engines4%
G05BControl or regulating systems in general4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
8,494,733'Prime mover rotation speed control system for hydraulically driven vehicle'20138,424,298'Pump torque control system for hydraulic construction machine'20138,359,140'Pedal lock control device for work vehicle'20138,355,846'Pedal lock control device for work vehicle'20137,970,522'Gear shifting control system for work machine'20117,912,616'Gear shifting control device for work machine'20116,101,456'Output correcting method in control system, control system, and hydraulic pump control system'20005,934,879'Pump torque control system'19995,890,303'Hydraulic by-pass circuit for a hydraulic shovel'19995,848,531'Hydraulic drive system for construction machines'19985,813,311'Hydraulic control system for hydraulic working machine'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2013Patents assigned to HITACHI CONSTRUCTION MACHINERY (11)· patent assignee history
1998–2000Based in Ibaraki, JP· patent location history
1999Based in Yawara-mura, JP· patent location history
1999Based in Ibariki, JP· patent location history
2011–2013Based in Kasumigaura, JP· patent location history
2013Patents assigned to KOWATARI YOUICHI (4)· patent assignee history
2013Patents assigned to GOTOU YUUKI (3)· patent assignee history
2013Patents assigned to ICHIMURA KAZUHIRO (3)· patent assignee history
2013Patents assigned to KODAKA KATSUAKI (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI CONSTRUCTION MACHINERY111998–2013
KOWATARI YOUICHIself42013
GOTOU YUUKI32013
ICHIMURA KAZUHIRO32013
KODAKA KATSUAKI32013
Locations
LocationPatentsSpan
Kasumigaura, JP62011–2013
Ibaraki, JP31998–2000
Yawara-mura, JP11999
Ibariki, JP11999