LexDanaLexDanabeta
Inventor

Katsuhiko Maeda

Inventor
Kanagawa, JP

Overview

40→
Patents
1980–2020
Patent span
Physics
Primary field (CPC G)

Patents· 40 as inventor

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

G03Gprimary
G03GElectrography26%
B41JTypewriters13%
G06KGraphical data reading13%
H04NPictorial communication, e.g. television13%
G02BOptical elements, systems or apparatus12%
Y10TTechnical subjects covered by former us classification4%
B05DProcesses for applying fluent materials to surfaces, in general2%
C02FTreatment of water, waste water, sewage, or sludge2%
C12NMicroorganisms or enzymes2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
10,732,555Image forming apparatus with multiple image forming devices and configured to correct misalignment of same202010,379,455Image forming apparatus201910,089,559Scanner, image forming apparatus, and scanning method20189,857,723'Light beam scanning apparatus and light beam scanning method'20189,436,148'Image forming apparatus and image forming method'20169,332,655'Electronic circuit, light source device, and method of manufacturing electronic circuit'20169,310,708'Optical scanning device, image forming apparatus, and optical scanning method'20169,312,558'Fuel cell, method for manufacturing the same, and application apparatus used for manufacturing the same'20169,242,478'Writing controlling apparatus, image forming apparatus, and computer program product'20169,170,516'Image forming apparatus and image forming method'20159,063,455'Light-emitting substrate, method for manufacturing the same, optical writing device, and image forming apparatus'20158,866,865'Image forming apparatus and turn-on time correction method'20148,603,339'Activated sludge material, method for reducing excess sludge production in bioreactor, and method of controlling bioreactor'20138,422,903'Image forming apparatus and image forming method'20138,305,416'Image forming apparatus, optical writing process control method, and optical writing process control program'20127,940,422'Image forming apparatus'20117,760,222'Image forming apparatus and method with improved capabilities of correcting image magnification error'20107,742,377'Image forming method, apparatus and computer-readable recording medium having image forming program'20107,679,634'Method and apparatus for image forming capable of detecting a reference signal for a lighting control'20107,627,277'Image forming apparatus and image forming method'20097,595,812'Image forming apparatus, printer apparatus, facsimile apparatus, and copying machine'20097,586,510'Image forming apparatus and image deviation correcting method'20097,508,408'Image forming apparatus capable of effectively initializing a laser drive circuit'20097,415,231'Color image forming apparatus and method'20087,313,352'Image forming apparatus, method of controlling same, machine-readable medium and process cartridge'20077,294,824'Light beam scanning device, image forming apparatus, and light beam scanning method'20077,224,378'Method and apparatus for optical recording and image forming capable of correcting a magnification error in scanning'20077,215,353'Method and apparatus for image forming capable of effectively controlling a light beam with a pulse width modulation'20076,999,708'Color image forming apparatus and method'20066,853,392'Image forming apparatus that adjusts image positional deviation without fail'20056,847,390'Method and apparatus for image forming capable of effectively adjusting an image recording start position'20056,833,856'Light beam magnification error auto correcting apparatus and method'20046,831,672'Image forming apparatus'20046,292,206'Image forming apparatus and method of producing light quantity correction data'20016,249,304'Image forming apparatus and image forming method for forming color images by gray-level image forming technique'20016,137,518'Image forming apparatus having an LED array head for forming image dots based on a pitch of the LEDs'20005,635,002'Method of preventing adhesion of adhesive substance, and method of preventing adhesion of non-vulcanized rubber'19975,466,510'Structure, method of preventing adhesion of adhesive substance, and method of preventing adhesion of non-vulcanized rubber'19954,467,035'Cultivation of phototrophic bacteria in the absence of ultraviolet light'19844,235,043'Method for cultivating algae and a covering material used therefor'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1984Based in Uozu, JP· patent location history
1995–1997Based in Saitama, JP· patent location history
2000–2010Patents assigned to RICOH KK (20)· patent assignee history
2000–2020Based in Kanagawa, JP· patent location history
2004–2012Based in Kawasaki, JP· patent location history
2005–2016Based in Tokyo, JP· patent location history
2011–2020Patents assigned to RICOH CO LTD (14)· patent assignee history
2012–2020Patents assigned to MAEDA KATSUHIKO (14)· patent assignee history
2015–2018Patents assigned to MATSUURA YUUGO (4)· patent assignee history
2015–2016Patents assigned to SUZUKI MASASHI (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK202000–2010
MAEDA KATSUHIKOself142012–2020
RICOH CO LTD142011–2020
MATSUURA YUUGO42015–2018
SUZUKI MASASHI32015–2016
Locations
LocationPatentsSpan
Kanagawa, JP222000–2020
Kawasaki, JP92004–2012
Tokyo, JP42005–2016
Saitama, JP21995–1997
Uozu, JP21980–1984