Inventor

Ryuta Murakami

Inventor

Suntou-gun, JP

Overview

2004–2021

Patent span

Physics

Primary field (CPC G)

Patents· 42 as inventor

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

G03Gprimary

G03GElectrography85%

LOC1612%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

10,962,927Cartridge and imaging forming apparatus2021 10,928,771Cartridge and imaging forming apparatus2021 10,901,366Image forming apparatus and cartridge2021 10,788,788Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions2020 10,678,184Image forming apparatus and cartridge2020 10,649,394Method of manufacturing frame unit, method of manufacturing image carrying unit, method of manufacturing cartridge, and cartridge2020 10,627,780Cartridge and image forming apparatus2020 10,564,597Method for manufacturing image bearing unit and method for manufacturing cartridge2020 D0873341Process cartridge for image forming apparatus2020 10,520,883Method for manufacturing image bearing unit and method for manufacturing cartridge2019 10,488,817Cartridge and image forming apparatus2019 10,303,116Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions2019 10,222,736Image forming apparatus2019 10,095,161Accommodating container, process cartridge and electrophotographic image forming apparatus2018 10,073,380Feeding device2018 9,989,892Developer accommodating container with projected shaped portion for contacting toner seal member2018 9,904,208'Accommodating container, cleaning device, developing device, process cartridge, and image forming apparatus'2018 9,823,603'Feeding device, cleaning device, developing device, process cartridge, and image forming apparatus'2017 9,618,873'Image forming apparatus'2017 9,599,932'Developer container with sealing member having a plurality of holes and rotatable member having a plurality of projections contactable with the sealing member'2017 9,523,942'Developer accommodating container, developing cartridge, process cartridge and image forming apparatus'2016 9,465,318'Developer accommodating container with toner seal member, unsealing member, and auxiliary unsealing member'2016 9,389,583'Image forming apparatus and process cartridge'2016 9,229,371'Developer container, developing cartridge, process cartridge and image forming apparatus'2016 9,188,906'Cartridge, developing cartridge, process cartridge and image forming apparatus'2015 9,164,430'Developer container, developing cartridge, process cartridge and image forming apparatus'2015 9,116,466'Cartridge, process cartridge and image forming apparatus'2015 9,069,289'Developer container, developing cartridge, process cartridge and image forming apparatus'2015 9,052,638'Cartridge and image forming apparatus with seal member for sealing a toner feeding opening'2015 8,620,181'Process cartridge and electrophotographic image forming apparatus'2013 D0622309'Process cartridge'2010 D0622308'Process cartridge'2010 7,519,311'Developing apparatus, process cartridge, image forming apparatus, and assemblying method for developing apparatus'2009 D0585482'Toner cartridge'2009 D0583860'Toner cartridge'2008 7,206,534'Process cartridge, developing cartridge and gripping part therefor'2007 7,156,797'Assembling method for developing roller'2007 7,024,131'Process cartridge assembling method, process cartridge remanufacturing method, and connecting member'2006 6,987,938'Process cartridge and image forming apparatus'2006 6,898,392'Process cartridge and electrophotographic image forming apparatus'2005 6,836,639'Cleaning apparatus having a cleaning member, a cleaning frame, and a connecting portion connecting both end surfaces of the frame'2004 6,735,405'Method of remanufacturing process cartridge and developing device'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2021Patents assigned to CANON KK (40)· patent assignee history

2004–2010Based in Shizuoka, JP· patent location history

2007Based in Susono, JP· patent location history

2013Patents assigned to MURAKAMI RYUTA (1)· patent assignee history

2013–2021Based in Suntou-gun, JP· patent location history

2020Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	40	2004–2021
MURAKAMI RYUTAself	1	2013

Locations

Location	Patents	Span
Suntou-gun, JP	29	2013–2021
Shizuoka, JP	11	2004–2010
Tokyo, JP	1	2020
Susono, JP	1	2007