Inventor

Kazuo Chadani

Inventor

Shizuoka, JP

Overview

1997–2021

Patent span

Physics

Primary field (CPC G)

Patents· 76 as inventor

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

G03Gprimary

G03GElectrography68%

F16DCouplings for transmitting rotation17%

LOC166%

H04NPictorial communication, e.g. television3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

B29CShaping or joining of plastics1%

H01RElectrically-conductive connections1%

Y10TTechnical subjects covered by former us classification1%

PatentTitleYear

11,131,959Process cartridge and image forming apparatus2021 11,092,927Process cartridge and image forming apparatus2021 10,880,469Image forming apparatus, cartridge and image forming apparatus system having erroneous cartridge insertion prevention2020 10,795,309Process cartridge and image forming apparatus2020 10,613,476Process cartridge and image forming apparatus2020 10,582,114Image forming apparatus, cartridge and image forming apparatus system having erroneous cartridge insertion prevention2020 10,401,783Process cartridge and image forming apparatus2019 10,156,827Cartridge and image forming apparatus2018 9,983,542Process cartridge and image forming apparatus2018 9,836,016Image forming apparatus and cartridge2017 9,720,373'Image forming apparatus, cartridge and image forming apparatus system'2017 9,581,958'Process cartridge and image forming apparatus'2017 9,360,825'Cleaning device, process cartridge, and electrophotographic image forming apparatus'2016 9,164,476'Toner cartridge having structure for minimizing deformation when gripped'2015 9,134,688'Process cartridge and image forming apparatus'2015 9,116,503'Developing unit, process cartridge and electrophotographic image forming apparatus'2015 9,058,018'Process cartridge and image forming apparatus'2015 8,909,092'Process cartridge and electrophotographic image forming apparatus to charge a photosensitive drum'2014 8,886,109'Cleaning unit, process cartridge, and electrophotographic image forming apparatus'2014 8,682,200'Process cartridge and image forming apparatus'2014 8,639,160'Process cartridge and image forming apparatus'2014 8,588,647'Process cartridge and image forming apparatus'2013 8,583,007'Process cartridge and image forming apparatus'2013 8,559,849'Process cartridge and electrophotographic image forming apparatus'2013 8,503,906'Process cartridge and assembling, disassembling remanufacturing method therefor'2013 8,447,209'Process cartridge and image forming apparatus'2013 8,442,416'Process cartridge and image forming apparatus'2013 8,401,424'Process cartridge and assemblying, disassemblying remanufacturing method therefor'2013 8,346,127'Process cartridge and image forming apparatus'2013 8,335,454'Process cartridge and image forming apparatus'2012 8,306,460'Process cartridge and image forming apparatus including drum and shaft coupling members transmitting driving forces to a photosensitive drum and a developing roller, respectively'2012 8,165,493'Process cartridge and electrophotographic image forming apparatus'2012 8,160,478'Process cartridge and image forming apparatus'2012 8,116,661'Process cartridge with a coupling member and a retaining portion for the coupling member'2012 7,899,364'Process cartridge having couplers transmitting driving forces from an image forming apparatus to electrophotographic photosensitive drum and developing roller and such an apparatus'2011 D0633137'Process cartridge'2011 7,890,025'Process cartridge and image forming apparatus including drum and shaft coupling members transmitting driving forces to a photosensitive drum and a developing roller, respectively'2011 D0631089'Process cartridge'2011 D0631091'Process cartridge'2011 D0631088'Process cartridge'2011 D0631090'Process cartridge'2011 7,689,146'Electrophotographic image forming apparatus and process cartridge'2010 7,570,900'Process cartridge receiving from an image forming apparatus into which it is mounted a downstream-moving force during mounting and such image forming apparatus'2009 7,499,663'Electrophotographic image forming apparatus and process cartridge'2009 7,433,622'Process cartridge and electrophotographic image forming apparatus'2008 7,366,445'Image forming apparatus including a plurality of image bearing members having a speed variation suppression feature'2008 7,184,682'Process cartridge and electrophotographic image forming apparatus'2007 7,136,604'Process cartridge having electrical contact connectable to electrical contact in electrophotographic image forming apparatus'2006 D0528591'Image forming apparatus'2006 6,980,759'Process cartridge and electrophotographic image forming apparatus'2005 6,934,485'Process cartridge, electrophotographic image forming apparatus and fixing method of electrical contact part'2005 6,931,226'Process cartridge remanufacturing method'2005 6,823,155'Process cartridge and image forming apparatus'2004 6,795,666'Remanufacturing method for process cartridge'2004 6,760,558'Developing device having a cover with partition member'2004 6,671,474'Developer container, process cartridge, and electrophotographic image forming apparatus'2003 6,636,706'Electrophotographic image forming apparatus'2003 6,585,848'Method for attaching electrically conductive sheet to developer sealing member'2003 6,535,699'Developer container, developer amount detecting system, process cartridge, developing device, and image forming apparatus'2003 6,512,903'Developer accommodating container, a developing device, a process cartridge, and an image forming apparatus whose developer-accommodating-container opening is sealed by a seal member'2003 6,473,585'Developer accommodating container, and developing device'2002 6,301,457'Coupling member, process cartridge and image forming apparatus'2001 6,282,389'Electrophotographic photosensitive drum, process cartridge and electrophotographic image forming apparatus'2001 6,266,502'Process cartridge with cleaning frame having reinforcing member'2001 6,219,504'Process cartridge and image forming apparatus'2001 6,208,817'Developing apparatus and method for assembling the same'2001 6,205,305'Developing apparatus having welded-together accommodating and developing containers'2001 6,178,302'Developer container seal, developer container, developing apparatus, process cartridge, and image forming apparatus'2001 6,173,140'Coupling member, process cartridge and assembling method of process cartridge'2001 6,173,145'Developing apparatus with drive mechanism for developer bearing body'2001 6,144,815'Developing device, process cartridge and electrophotographic image forming apparatus'2000 5,966,567'Process cartridge and electrophotographic image forming apparatus'1999 5,943,529'Process cartridge and electrophotographic image forming apparatus'1999 5,832,343'Toner supply method, toner accommodation container, process cartridge and electrophotographic image forming apparatus'1998 5,802,431'Collapsible toner container'1998 5,655,181'Toner accommodation container, process cartridge and electrophotographic image forming apparatus'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2021Patents assigned to CANON KK (74)· patent assignee history

1997–1998Based in Kawasaki, JP· patent location history

1999–2011Based in Shizuoka, JP· patent location history

2001–2020Based in Nishikamo-gun, JP· patent location history

2008Based in Nagaizumi-cho, JP· patent location history

2012–2015Patents assigned to CHADANI KAZUO (17)· patent assignee history

2012–2015Patents assigned to MORI TOMONORI (10)· patent assignee history

2012–2015Patents assigned to HASHIMOTO KOJI (9)· patent assignee history

2012–2013Patents assigned to MUNETSUGU HIROYUKI (3)· patent assignee history

2012–2021Based in Suntou-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	74	1997–2021
CHADANI KAZUOself	17	2012–2015
MORI TOMONORI	10	2012–2015
HASHIMOTO KOJI	9	2012–2015
MUNETSUGU HIROYUKI	3	2012–2013

Locations

Location	Patents	Span
Shizuoka, JP	32	1999–2011
Nishikamo-gun, JP	20	2001–2020
Suntou-gun, JP	18	2012–2021
Kawasaki, JP	3	1997–1998
Nagaizumi-cho, JP	1	2008