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Inventor

Koichi Hatamura

Inventor
Hiroshima, JP

Overview

25→
Patents
1986–2016
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 25 as inventor

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

Y02Tprimary
Y02TClimate change mitigation technologies related to transportation22%
F01LCyclically operating valves for machines or engines18%
F02BInternal-combustion piston engines18%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof12%
F02DControlling combustion engines9%
F02FCylinders, pistons or casings, for combustion engines6%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general5%
Y10TTechnical subjects covered by former us classification3%
F01MLubricating of machines or engines in general2%
F02PIgnition, other than compression ignition, for internal-combustion engines2%
PatentTitleYear
9,494,061'Variable valve system'20168,534,261'Four-cycle engine'20138,468,800'Secondary air and exhaust gas recirculation for a four-stroke internal combustion engine'20138,065,988'Four-cycle engine'20117,980,210'Variable valve drive system for engine'20117,753,037'Engine'20107,584,730'Valve train device for engine'20097,469,669'Variable valve train mechanism of internal combustion engine'20087,398,750'Valve mechanism for internal combustion engine'20087,308,874'Valve mechanism for an internal combustion engine'20077,281,504'Valve train device for engine'20077,204,491'Metal gasket'20077,168,403'Valve train device for engine'20077,096,835'Valve train device for an engine'20067,069,890'Valve train device for an engine'20066,651,610'Engine control system'20035,377,649'Lubricating device for engine-driven supercharger'19955,090,392'Control system for engine with supercharger'19924,919,087'Intake system for V-type vehicle engine'19904,736,714'Engine intake system'19884,702,207'Intake arrangement for internal combustion engine'19874,686,944'Intake manifold structure for V-type engine'19874,649,871'Intake system for V-type engine'19874,630,575'Intake system for multicylinder engine'19864,625,687'Intake arrangement for internal combustion engine'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2003Patents assigned to MAZDA MOTOR (10)· patent assignee history
1986–2016Based in Hiroshima, JP· patent location history
2006–2011Patents assigned to YAMAHA MOTOR CO LTD (9)· patent assignee history
2007–2011Based in Iwata, JP· patent location history
2010–2013Patents assigned to HATAMURA KOICHI (4)· patent assignee history
2010Based in Minami, JP· patent location history
2011–2013Based in Yachiyo, JP· patent location history
2013–2016Patents assigned to HATAMURA ENGINE RES OFFICE LTD (2)· patent assignee history
2013Patents assigned to CD ADAPCO JAPAN CO LTD (1)· patent assignee history
2013Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MAZDA MOTOR101986–2003
YAMAHA MOTOR CO LTD92006–2011
HATAMURA KOICHIself42010–2013
HATAMURA ENGINE RES OFFICE LTD22013–2016
CD ADAPCO JAPAN CO LTD12013
Locations
LocationPatentsSpan
Hiroshima, JP181986–2016
Iwata, JP32007–2011
Yachiyo, JP22011–2013
Chiba, JP12013
Minami, JP12010