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Inventor

Naoki Matsui

Inventor
Kawasaki, JP

Overview

40→
Patents
1992–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 40 as inventor

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

C22Cprimary
C22CAlloys15%
G09GArrangements or circuits for control of indicating devices using static means to present variable information15%
C21DModifying the physical structure of ferrous metals14%
B41JTypewriters7%
G03GElectrography7%
H04NPictorial communication, e.g. television5%
B21BRolling of metal4%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables4%
B01DSeparation3%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels3%
PatentTitleYear
10,976,564Isolator, light source device, optical transmitter, and optical amplifier202110,917,619Display apparatus, display system, moveable body, and display method202110,837,080Rolled steel bar or rolled wire rod for cold-forged component202010,829,842Rolled steel bar or rolled wire rod for cold-forged component202010,787,332Sheet conveyance apparatus and image forming apparatus including the same202010,764,449Maintenance system for performing maintenance of image forming apparatus202010,669,604Bolt202010,582,627Optional device for electrical machine, and electrical machine202010,487,372High-strength bolt201910,385,427Wire rod20199,994,943Rolled steel bar for hot forging, hot-forged section material, and common rail and method for producing the same20189,951,403Hot-forged section material and common rail20189,936,604Optional device for electrical appliance20189,815,642'Sheet material feeding device and image forming apparatus'20179,574,255'Rolled steel bar for hot forging'20178,463,159'Image forming unit and image forming apparatus including elastically deformable charging roller'20138,240,659'Post-processing apparatus and image forming system having post-processing apparatus'20127,592,976'Flat display panel having internal power supply circuit for reducing power consumption'20097,068,264'Flat display panel having internal power supply circuit for reducing power consumption'20066,982,749'Remote control camera system and image transmission method'20066,838,048'Steel for machine structural use and method of producing same'20056,797,231'Steel for machine structural use'20046,636,187'Display and method of driving the display capable of reducing current and power consumption without deteriorating quality of displayed images'20036,545,395'Piezoelectric conversion element having an electroded surface with a non-electrode surface portion at an end thereof'20036,522,314'Flat display panel having internal power supply circuit for reducing power consumption'20036,334,672'Inkjet recording head having a driving source attached by a chamfered adhesive layer'20026,305,791'Ink-jet recording device'20016,278,222'Piezoelectric element, piezoelectric element manufacturing method and actuator using piezoelectric element'20016,249,265'Intraframe time-division multiplexing type display device and a method of displaying gray-scales in an intraframe time-division multiplexing type display device'20016,222,512'Intraframe time-division multiplexing type display device and a method of displaying gray-scales in an intraframe time-division multiplexing type display device'20016,171,413'Soft cold-rolled steel sheet and method for making the same'20016,142,607'Ink-jet recording head'20006,144,349'Plasma display device'20006,107,978'Plasma display having variable scan line pulses to reduce flickering'20006,059,395'Inkjet recording head'20006,042,219'Ink-jet recording head'20005,898,414'Display method for intermediate gray scale and display apparatus for expressing intermediate gray scale'19995,874,932'Plasma display device'19995,182,074'Apparatus for continuously cooling metal strip'19935,081,857'Cold rolling method using cleaning brushes for at least the back up rolls'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2009Based in Kawasaki, JP· patent location history
1993–2021Based in Tokyo, JP· patent location history
1999–2003Patents assigned to FUJITSU LTD (8)· patent assignee history
2000–2006Patents assigned to MINOLTA CO LTD (8)· patent assignee history
2000–2003Based in Sakai, JP· patent location history
2017–2020Patents assigned to NIPPON STEEL & SUMITOMO METAL CORP (6)· patent assignee history
2017–2020Patents assigned to KONICA MINOLTA INC (4)· patent assignee history
2017–2020Based in Toyohashi, JP· patent location history
2019–2020Patents assigned to NIPPON STEEL CORP (5)· patent assignee history
2019–2020Based in Kisarazu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD81999–2003
MINOLTA CO LTD82000–2006
NIPPON STEEL & SUMITOMO METAL CORP62017–2020
NIPPON STEEL CORP52019–2020
KONICA MINOLTA INC42017–2020
Locations
LocationPatentsSpan
Kawasaki, JP111992–2009
Tokyo, JP71993–2021
Sakai, JP72000–2003
Kisarazu, JP42019–2020
Toyohashi, JP32017–2020