Inventor

Mitsuru Oikawa

Inventor

Suwon-si, KR

Overview

1977–2018

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

G03GElectrography78%

H01JElectric discharge tubes or discharge lamps22%

PatentTitleYear

10,126,679Developing casing of a developing unit for an electrophotographic image forming apparatus having a developer collection inlet to collect developer moving along a discharge path2018 10,101,687Developing apparatus and image forming apparatus having same2018 10,078,292Toner cartridge, image forming apparatus including the same, and method for controlling the image forming apparatus2018 9,223,245'Developing device to form a uniform developer layer on a developing member and electrophotographic image forming apparatus using the same'2015 9,207,568'Developing unit adopting a two component agent and electrophotographic image forming apparatus employing the same'2015 8,644,737'Developing device and electrophotographic image forming apparatus including the same'2014 8,309,288'Color toner and preparation method thereof'2012 4,248,947'Method for master pattern production'1981 4,020,191'Method for forming flat display panel phosphor dots'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1981Patents assigned to HITACHI LTD (2)· patent assignee history

1977–1981Based in Tokyo, JP· patent location history

2012–2015Patents assigned to SAMSUNG ELECTRONICS CO LTD (4)· patent assignee history

2012–2015Patents assigned to OIKAWA MITSURU (3)· patent assignee history

2012–2015Based in Suwon-si, KR· patent location history

2015Patents assigned to JUN JONG-PIL (1)· patent assignee history

2018Patents assigned to S PRINTING SOLUTION CO LTD (3)· patent assignee history

2018Based in Seongnam-si, KR· patent location history

2018Based in Seongnam, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SAMSUNG ELECTRONICS CO LTD	4	2012–2015
OIKAWA MITSURUself	3	2012–2015
S PRINTING SOLUTION CO LTD	3	2018
HITACHI LTD	2	1977–1981
JUN JONG-PIL	1	2015

Locations

Location	Patents	Span
Suwon-si, KR	4	2012–2015
Seongnam-si, KR	2	2018
Tokyo, JP	2	1977–1981
Seongnam, KR	1	2018