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Inventor

Kazuo Otsuka

Inventor
Higashikurume, JP

Overview

61→
Patents
1980–2020
Patent span
Performing operations
Primary field (CPC B)

Patents· 61 as inventor

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

B41Jprimary
B41JTypewriters22%
F02DControlling combustion engines20%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables14%
Y02TClimate change mitigation technologies related to transportation8%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof6%
E02FDredging2%
G03GElectrography2%
H02HEmergency protective circuit arrangements2%
A63CSkates1%
B07CPostal sorting1%
PatentTitleYear
10,759,203Recording apparatus202010,752,027Medium transporting device and recording apparatus202010,730,320Medium transport device and recording apparatus202010,703,116Recording apparatus202010,647,133Medium transporting device and recording apparatus202010,618,296Liquid ejecting apparatus202010,500,874Recording apparatus201910,412,238Recording apparatus201910,308,029Liquid holding unit and liquid ejection device201910,118,423Recording device20189,889,998'Recording apparatus with movable feed roller'20189,725,262'Recording apparatus'20179,624,053'Recording apparatus with a medium restricting portion'20179,039,165'Recording apparatus'20157,614,739'Recording apparatus with movable discharge tray'20097,481,426'Medium feeder and liquid ejecting apparatus or recording apparatus incorporating the same'20097,309,123'Recording apparatus'20077,281,791'Recording apparatus'20077,114,716'Paper feeder'20067,111,934'Recording medium feeding apparatus, recording apparatus, liquid ejecting apparatus'20067,101,096'Tray for transferring recording media, and recording apparatus'20066,916,132'Double-sided printing apparatus'20056,854,843'Recording apparatus'20056,814,436'Recording apparatus'20046,708,969'Paper feeder'20046,561,611'Detector unit and ink cartridge incorporated in recording apparatus, and method of judging presence of the ink cartridge using the detector unit'20036,491,295'Paper feeder'20026,081,052'Rotor for rotating machine, process for producing the same, and magnet unit'20005,880,574'Control system for electric vehicle'19995,714,719'Workload detecting system for excavating and loading apparatus'19985,696,331'Apparatus for detecting metal powder amount in hydraulic circuit'19975,483,324'Charging device for an image forming apparatus'19964,790,531'Indoor ski slope and apparatus for making snow thereon'19884,718,396'Multicylinder internal combustion engine with rotation sensor'19884,526,148'Air-fuel ratio control system for an internal combustion engine'19854,507,057'Control system for hydraulic pumps of a civil machine'19854,503,479'Electronic circuit for vehicles, having a fail safe function for abnormality in supply voltage'19854,478,199'Method of controlling exhaust-gas recirculation in internal combustion engine'19844,450,812'Electric control system for internal combustion engines, having fail safe function for engine condition detecting sensors'19844,450,680'Air/fuel ratio control system for internal combustion engines, having secondary air supply control'19844,434,764'Air/fuel ratio feedback control system for internal combustion engines, having atmospheric pressure-dependent fail safe function for O.sub.2 sensor'19844,414,950'Fail safe device for air/fuel ratio feedback control system'19834,407,243'Air/fuel ratio control system having function of controlling supply of secondary air into intake pipe of internal combustion engine'19834,401,080'Air/fuel ratio control system for internal combustion engines, having air/fuel ratio control function at engine acceleration'19834,399,792'Air/fuel ratio control system for internal combustion engines, having engine warming-up detecting means'19834,393,842'Air/fuel ratio control system for internal combustion engines, having atmospheric pressure compensating function'19834,393,843'Air-fuel ratio feedback control system for internal combustion engines, having function of correcting position of air/fuel ratio control valve actuator'19834,383,409'Air/fuel ratio control system for internal combustion engines, having function of detecting air/fuel ratio control initiating timing'19834,380,988'Air/fuel ratio control system for internal combustion engines, having exhaust gas recirculation control function'19834,380,985'Flow rate control system for fluid being supplied to an internal combustion engine, having initial position setting function for flow rate control valve actuator'19834,377,142'Air/fuel ratio control system having an evaporated fuel purging control arrangement'19834,375,797'Air/fuel ratio feedback control system for internal combustion engines'19834,375,800'Control system for internal combustion engines, provided with an exhaust gas recirculation control having a fail safe function'19834,371,822'Control device for pulse motors, having a fail safe function'19834,367,713'Air/fuel ratio control system for internal combustion engines, having air/fuel control function at engine deceleration'19834,364,359'Control system for internal combustion engines, having function of detecting abnormalities in engine speed signal detecting system'19824,354,470'Fuel supply apparatus in internal combustion engine'19824,333,558'Photoelectric control system for parts orientation'19824,333,049'Inrush current measuring apparatus with instantaneous power interruption device'19824,254,068'Method and apparatus for regenerating foamed plastics'19814,216,572'Replaceable gang head machine tool'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2000Patents assigned to HONDA MOTOR CO LTD (26)· patent assignee history
1981–1996Based in Tokyo, JP· patent location history
1982–1985Based in Higashikurume, JP· patent location history
1985–1998Patents assigned to KOMATSU MFG CO LTD (3)· patent assignee history
1988Patents assigned to KAJIMA CORP (1)· patent assignee history
1988–2000Based in Saitama, JP· patent location history
1996Patents assigned to NEC CORP (1)· patent assignee history
2002–2020Patents assigned to SEIKO EPSON CORP (27)· patent assignee history
2002–2019Based in Nagano, JP· patent location history
2015–2020Based in Azumino, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP272002–2020
HONDA MOTOR CO LTD261980–2000
KOMATSU MFG CO LTD31985–1998
KAJIMA CORP11988
NEC CORP11996
Locations
LocationPatentsSpan
Higashikurume, JP211982–1985
Nagano, JP142002–2019
Azumino, JP132015–2020
Tokyo, JP31981–1996
Saitama, JP21988–2000