Inventor

Osamu Namikawa

Inventor

Katsuta, JP

Overview

1990–2013

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

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

G03Gprimary

G03GElectrography60%

G02BOptical elements, systems or apparatus10%

G06KGraphical data reading10%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes10%

H04NPictorial communication, e.g. television10%

PatentTitleYear

8,483,860'Environmental load amount calculation method, execution program therefor, and execution apparatus therefor'2013 5,559,578'Electrostatic recording apparatus with electrified cap and managing system thereof'1996 5,504,556'Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus'1996 5,404,201'Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus'1995 5,161,046'Beam position control apparatus'1992 5,138,380'Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus'1992 4,961,704'Sheet meandering movement preventing method'1990 4,910,555'Electrophotographic device with controlled exposed potential'1990 4,908,634'Laser power control for cut-paper printer'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1996Patents assigned to HITACHI KOKI KK (8)· patent assignee history

1990–2013Patents assigned to HITACHI LTD (7)· patent assignee history

1990–1996Based in Katsuta, JP· patent location history

1990–1992Based in Ibaraki, JP· patent location history

2013Patents assigned to AKAHORI TOMOHIKO (1)· patent assignee history

2013Patents assigned to NAMIKAWA OSAMU (1)· patent assignee history

2013Based in Hadano, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI KOKI KK	8	1990–1996
HITACHI LTD	7	1990–2013
AKAHORI TOMOHIKO	1	2013
NAMIKAWA OSAMUself	1	2013

Locations

Location	Patents	Span
Katsuta, JP	5	1990–1996
Ibaraki, JP	3	1990–1992
Hadano, JP	1	2013