Inventor

Eisaku Murakami

Inventor

Hiratsuka, JP

Overview

1996–2012

Patent span

Physics

Primary field (CPC G)

Patents· 51 as inventor

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

G03Gprimary

G03GElectrography93%

B05DProcesses for applying fluent materials to surfaces, in general4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

PatentTitleYear

8,180,270'Image forming apparatus for controlling glossiness of an image'2012 7,925,188'Development device, process cartridge, and image forming apparatus using the development device'2011 7,672,605'Transfer device and image forming apparatus'2010 7,657,218'Gloss providing sheet and image formation apparatus'2010 7,630,659'Method and apparatus for image forming capable of effectively performing a charging process'2009 7,603,062'Conductive member, and charging roller, process cartridge and image forming apparatus using same'2009 7,555,243'Charging member, process cartridge including the same, and image forming apparatus including the same'2009 7,493,075'Cleaning device, process cartridge and image forming apparatus'2009 7,430,377'Image forming apparatus and process cartridge having a detachable unit body having a lubricant applying unit and image carrier mounted thereon'2008 7,400,844'Image forming apparatus and process cartridge with a cleaner for removing toner from an image bearing member'2008 7,386,257'Imaging apparatus, and toner and process cartridge used in the imaging apparatus'2008 7,295,796'Image forming apparatus having a temporary toner holding device and a toner collecting device'2007 7,292,817'Image forming apparatus, process cartridge, and waste toner recovery device'2007 7,272,354'Cleaning unit and image forming apparatus having multiple cleaning blades'2007 7,266,324'Charging device, and process cartridge and image forming apparatus using the charging device'2007 7,228,099'Cleaning device for cleaning a surface of an image support body'2007 7,218,877'Charging device, and process cartridge and image forming apparatus including the charging device using the same'2007 7,184,684'Image forming apparatus, process cartridge, and waste toner recovery device'2007 7,149,465'Cleaning unit, process cartridge, image forming apparatus, and toner'2006 7,139,504'Charging device, and process cartridge and image forming apparatus using the charging device'2006 7,130,564'Method and apparatus for image forming capable of removing residual toner without using a toner cleaning system, process cartridge for use in the apparatus and toner used for the image forming'2006 7,110,699'Image forming apparatus and process cartridge for use in the same'2006 7,110,696'Cleaning unit, process cartridge, and image forming apparatus'2006 7,085,528'Cleaning unit, process cartridge, and image forming apparatus'2006 7,065,316'Cleaning unit, process cartridge, image forming apparatus, and toner'2006 7,062,194'Charging device, and process cartridge and image forming apparatus including the charging device'2006 7,050,741'Imaging apparatus, and toner and process cartridge used in the imaging apparatus'2006 6,993,281'Image forming apparatus and process cartridge including flexible member'2006 6,975,830'Image forming apparatus, process cartridge, and waste toner recovery device'2005 6,072,977'Even bias applying transfer roller'2000 6,033,818'Developing device for an image forming apparatus'2000 5,995,789'Toner cartridge including toner outlet openings and toner collection openings arranged substantially in a single array'1999 5,897,243'Electrophotographic recording apparatus configured to switch a bias voltage in a developing unit'1999 5,879,752'Method of coating a toner conveyor roller'1999 5,845,183'Developing device for an image forming apparatus'1998 5,826,144'Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller'1998 5,768,665'Image forming apparatus with bias control to prevent undesirable toner deposition'1998 5,734,952'Developing device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing device'1998 5,708,942'Developing device for an image forming apparatus'1998 5,697,026'Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships'1997 5,689,782'Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers'1997 5,666,625'Device for electrostatically developing a latent image on an image carrier'1997 5,625,441'Developing device for an image forming apparatus'1997 5,625,439'Electrophotographic recording apparatus having toner delivering member with large wetting angle'1997 5,625,438'Toner, and devices for electrostatically depositing a uniform application thereof'1997 5,625,440'Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering'1997 5,617,191'Toner conveyor roller and image forming apparatus having the same'1997 5,610,693'Developing device for an image forming apparatus'1997 5,552,870'Developing device for an image forming apparatus'1996 5,489,747'Developing device for an image forming apparatus'1996 5,486,909'Developing device for an image forming apparatus'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2010Patents assigned to RICOH KK (49)· patent assignee history

1996–2000Based in Hiratsuka, JP· patent location history

1997–2007Based in Kanagawa, JP· patent location history

2006–2012Based in Tokyo, JP· patent location history

2006–2007Based in Suginami-ku, JP· patent location history

2011–2012Patents assigned to RICOH CO LTD (2)· patent assignee history

2012Patents assigned to AOKI KATSUHIRO (1)· patent assignee history

2012Patents assigned to MARUYAMA HITOSHI (1)· patent assignee history

2012Patents assigned to MIYAWAKI KATSUAKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	49	1996–2010
RICOH CO LTD	2	2011–2012
AOKI KATSUHIRO	1	2012
MARUYAMA HITOSHI	1	2012
MIYAWAKI KATSUAKI	1	2012

Locations

Location	Patents	Span
Hiratsuka, JP	21	1996–2000
Tokyo, JP	19	2006–2012
Kanagawa, JP	8	1997–2007
Suginami-ku, JP	3	2006–2007