LexDanaLexDanabeta
Inventor

Keiji Masuda

Inventor
Hachioji, JP

Overview

10→
Patents
1977–2014
Patent span
Physics
Primary field (CPC G)

Patents· 10 as inventor

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

G03Gprimary
G03GElectrography42%
H03GControl of amplification17%
H04NPictorial communication, e.g. television17%
C07DHeterocyclic compounds8%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them8%
H03FAmplifiers8%
PatentTitleYear
8,659,358'Amplifier, transmission apparatus, and gate voltage determination method'20148,558,614'Amplification device'20135,921,537'Post-processing apparatus of digital image forming apparatus'19995,751,431'Digital image forming apparatus capable of easily installing and removing optical scanner unit'19984,939,537'Exposure controlling apparatus'19904,908,513'Charging apparatus'19904,448,511'Electrophotographic recording apparatus with corona-discharge device having cover means between end of discharge wire and electrophotosensitive surface'19844,428,661'Magnetic brush type developing device'19844,367,690'Heated roller type fixing apparatus'19834,001,257'Process for producing nicotinic acid'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to NIPPON SODA CO (1)· patent assignee history
1977Based in Nakago, JP· patent location history
1983–1990Patents assigned to KONISHIROKU PHOTO IND (5)· patent assignee history
1983–1990Based in Hachioji, JP· patent location history
1998–1999Patents assigned to SHARP KK (2)· patent assignee history
1998–1999Based in Tenri, JP· patent location history
2013–2014Patents assigned to FUJITSU LTD (2)· patent assignee history
2013–2014Patents assigned to MASUDA KEIJI (2)· patent assignee history
2013–2014Based in Sendai, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KONISHIROKU PHOTO IND51983–1990
FUJITSU LTD22013–2014
MASUDA KEIJIself22013–2014
SHARP KK21998–1999
NIPPON SODA CO11977
Locations
LocationPatentsSpan
Hachioji, JP51983–1990
Sendai, JP22013–2014
Tenri, JP21998–1999
Nakago, JP11977