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Inventor

Keita Maejima

Inventor
Kanagawa, JP

Overview

15→
Patents
2009–2020
Patent span
Physics
Primary field (CPC G)

Patents· 15 as inventor

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

G03Gprimary
G03GElectrography58%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables13%
H05BElectric heating8%
G01FMeasuring volume, volume flow, mass flow or liquid level4%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems4%
H04NPictorial communication, e.g. television4%
PatentTitleYear
10,826,390Power supply and image forming apparatus incorporating same202010,746,583Water content measuring device, measuring method, and image forming device202010,599,064Powder-amount detection device and image forming apparatus incorporating same202010,571,841Thickness detector and image forming apparatus202010,555,373Heater control device and image forming apparatus202010,488,787Remaining powder amount detection device, image forming device, and remaining powder amount detection method201910,429,770Powder-amount detection device and image forming apparatus incorporating same201910,029,871Image forming apparatus and setting method20189,541,867'Apparatus, method, and non-transitory recording medium for power generation using heat in image forming apparatus'20179,429,909'Image forming apparatus'20169,389,573'Image forming apparatus, image forming method, and computer-readable storage medium'20169,335,683'Fixing device and image forming apparatus'20169,116,479'Fixing control device, fixing control method, and image forming apparatus'20158,761,625'Fixing device, control method for the same, and image forming apparatus'20147,633,508'Data transfer apparatus'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009–2020Based in Kanagawa, JP· patent location history
2014–2020Patents assigned to RICOH CO LTD (13)· patent assignee history
2014–2020Patents assigned to MAEJIMA KEITA (11)· patent assignee history
2015–2017Patents assigned to OKADA NORIKAZU (4)· patent assignee history
2015–2017Patents assigned to YAMASHITA TOMOYUKI (4)· patent assignee history
2016–2017Patents assigned to EHARA HOMARE (3)· patent assignee history
2020Based in Sagamihara, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH CO LTD132014–2020
MAEJIMA KEITAself112014–2020
OKADA NORIKAZU42015–2017
YAMASHITA TOMOYUKI42015–2017
EHARA HOMARE32016–2017
Locations
LocationPatentsSpan
Kanagawa, JP142009–2020
Sagamihara, JP12020