Inventor

Hiromi Ogiyama

Inventor

Tokyo, JP

Overview

1985–2018

Patent span

Physics

Primary field (CPC G)

Patents· 46 as inventor

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

G03Gprimary

G03GElectrography98%

B82YSpecific uses or applications of nanostructures2%

PatentTitleYear

9,864,307'Image forming apparatus with a controller to set transfer bias'2018 9,488,937'Image forming apparatus'2016 9,323,170'Image forming apparatus with a controller to set transfer bias'2016 9,291,934'Image forming apparatus'2016 9,291,955'Image forming apparatus and transfer bias application device therein'2016 9,195,179'Transfer device and image forming apparatus including same'2015 9,164,462'Image forming apparatus'2015 9,152,070'Transfer device and image forming apparatus'2015 9,122,207'Image forming apparatus and transfer bias application device therein'2015 9,081,333'Image forming apparatus and transfer bias application device therein'2015 9,075,383'Image forming apparatus'2015 9,057,991'Image forming apparatus'2015 9,037,022'Image forming apparatus, image forming system, and transfer method'2015 9,031,436'Image forming apparatus'2015 8,977,153'Image forming apparatus which uses an AC voltage and/or a DC voltage at a transfer nip depending on a surface roughness of a recording sheet'2015 8,948,644'Power supply module and image forming apparatus including same'2015 8,942,604'Image forming apparatus'2015 8,934,822'Transfer device and image forming apparatus'2015 8,929,786'Image forming apparatus, system, and method using a superimposed voltage signal and a direct voltage signal'2015 8,892,013'Transfer device and image forming apparatus'2014 8,891,996'Power supply module and image forming apparatus including same'2014 8,824,941'Image transfer device and image forming apparatus incorporating same'2014 8,824,940'Image forming apparatus including heat transmission member'2014 8,805,223'Image forming apparatus, image forming system, and transfer method'2014 8,787,806'Image forming apparatus'2014 8,755,723'Image forming apparatus and method of eliminating a charge on a recording medium by applying an AC voltage'2014 8,682,231'Image forming apparatus'2014 8,280,283'Heat transmission member included image forming apparatus'2012 8,275,275'Image forming apparatus'2012 8,270,886'Transfer nip roller, transfer device, and image forming apparatus'2012 7,773,928'Transfer-separation device and image forming apparatus'2010 7,610,004'Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image'2009 7,346,287'Transfer device for forming a stable transfer electric field, and an image forming apparatus including the transfer device'2008 7,280,792'Method for evaluating changes in resistance of electric resistance member and image forming apparatus using same'2007 7,203,433'Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image'2007 7,003,238'Intermediate image transfer device for a color image forming apparatus'2006 6,901,234'Image forming apparatus including an intermediate image transfer belt and high resistance contact member'2005 6,829,450'Transfer bias applying method for an image forming apparatus and device for the same'2004 6,785,500'Image forming apparatus including image transfer body with elastic layer and coating layer'2004 6,741,821'Image forming apparatus, and process cartridge for use in image forming apparatus'2004 6,697,595'Method and apparatus for forming an image with no degradation'2004 6,618,565'Transfer bias applying method for an image forming apparatus and device for the same'2003 6,405,002'Image formation apparatus'2002 5,483,330'Image transfer unit of image formation apparatus'1996 4,851,874'Developing apparatus for image recorder'1989 4,528,937'Device for forming a developer film'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2010Patents assigned to RICOH KK (16)· patent assignee history

1985–2018Based in Tokyo, JP· patent location history

2008Based in Setagaya, JP· patent location history

2012–2018Patents assigned to RICOH CO LTD (28)· patent assignee history

2012–2018Patents assigned to OGIYAMA HIROMI (26)· patent assignee history

2012–2018Patents assigned to SHIMIZU YASUNOBU (21)· patent assignee history

2014–2018Patents assigned to SENGOKU KENJI (13)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH CO LTD	28	2012–2018
OGIYAMA HIROMIself	26	2012–2018
SHIMIZU YASUNOBU	21	2012–2018
RICOH KK	16	1985–2010
SENGOKU KENJI	13	2014–2018

Locations

Location	Patents	Span
Tokyo, JP	45	1985–2018
Setagaya, JP	1	2008