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Inventor

Yasuyuki Tsuji

Inventor
Ibaraki, JP

Overview

24→
Patents
1988–2014
Patent span
Physics
Primary field (CPC G)

Patents· 24 as inventor

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

G03Gprimary
G03GElectrography33%
B41JTypewriters14%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables10%
G02BOptical elements, systems or apparatus7%
B26DCutting5%
F16CShafts5%
G06KGraphical data reading5%
H04NPictorial communication, e.g. television5%
B41LApparatus or devices for manifolding, duplicating or printing for office or other commercial purposes2%
C23CCoating metallic material2%
PatentTitleYear
8,674,949'Liquid crystal display apparatus'20148,455,837'Ion implanter, ion implantation method and program'20137,168,859'Thrust ball bearing'20075,818,496'Exposure device of electrophotographic apparatus with optical path position deciding device'19985,790,168'Printing apparatus with movable slitter for printed paper sheet'19985,774,777'Continuous recording medium friction-conveying mechanism in image forming apparatus'19985,572,290'Electrophotographic printing system including a plurality of electrophotographic printers having adjustable printing speeds'19965,561,514'Image forming apparatus and sheet arranging method for the apparatus'19965,545,840'Developing device in electrophotographic apparatus including developing poll configuration while stably carries developer'19965,516,982'Developing apparatus having developer regulating member'19965,459,562'Recording apparatus for printing both faces of a recording medium using an electrophotographyprocess'19955,453,820'Developing device having a developer mixing chamber for use in electrophotographic apparatus'19955,416,571'Developing device for electrophotograph-type printer'19955,402,409'Optical recording apparatus and method for adding information in a sub-scanning direction and for deflecting a light beam to an optimum sub-scanning recording position'19955,359,396'Toner density detection method for electrophotographic apparatus'19945,179,417'Apparatus for printing on opposite surfaces of a strip of printing paper'19935,039,086'Method and apparatus for adjusting posture of sheets'19915,033,878'Cage for spherical roller bearing'19915,018,718'Sheet registration method and apparatus for calculation of delay time and sheet feed control thereby'19915,006,705'Light beam scanning apparatus with controller for varying spacing between a plurality of scanning beams'19914,926,216'Feeder of sheet-like photo-sensitive material'19904,908,634'Laser power control for cut-paper printer'1990D0305130'Line printer for a computer'19894,774,545'Cut paper electrophotographic printers with continuous paper feed mechanisms'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1998Patents assigned to HITACHI KOKI KK (19)· patent assignee history
1988–1998Based in Ibaraki, JP· patent location history
1990–1998Patents assigned to HITACHI LTD (6)· patent assignee history
1990–1995Based in Katsuta, JP· patent location history
1991–2007Patents assigned to NTN TOYO BEARING CO LTD (2)· patent assignee history
1998Based in Hitachinaka, JP· patent location history
2013–2014Patents assigned to TSUJI YASUYUKI (2)· patent assignee history
2013Based in Okayama, JP· patent location history
2014Patents assigned to ARAKI SHIGESUMI (1)· patent assignee history
2014Based in Kanazawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI KOKI KK191988–1998
HITACHI LTD61990–1998
NTN TOYO BEARING CO LTD21991–2007
TSUJI YASUYUKIself22013–2014
ARAKI SHIGESUMI12014
Locations
LocationPatentsSpan
Ibaraki, JP111988–1998
Katsuta, JP61990–1995
Hitachinaka, JP21998
Kanazawa, JP12014
Okayama, JP12013