Inventor
Yuji Nagatomo
Inventor
Osaka, JP
Overview
Patents· 31 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography94%
G01RMeasuring electric variables3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,036,976Developing device, and image forming apparatus and process unit incorporating same20189,958,806Developing device and image forming apparatus incorporating same20189,551,956'Image forming apparatus that utilizes toner roller bias voltages for image density adjustments'20179,335,663'Seal, cleaning unit with seal, transfer unit with seal, developing unit with seal, process cartridge with seal, image forming apparatus with seal, and image forming method'20169,116,460'Reducing toner adhesion to a development device of an image forming apparatus'20158,983,323'Color image forming apparatus with a line velocity difference set between image carriers'20158,977,150'Image forming apparatus including a controller configured to regulate a potential difference between a photoconductor and a developing member'20158,971,743'Image forming apparatus and image forming method'20158,867,971'Developer regulator, development device, and image forming apparatus incorporating same'20148,805,222'Image developing device, process cartridge including image developing device, and image forming device including image developing device'20148,406,664'Image forming apparatus, image forming method, and developing device'20138,354,164'Semiconductive member, and developing roll, charging roll, transfer belt, and image forming apparatus using same'20137,907,871'Image forming apparatus'20117,903,993'Image forming apparatus'20117,822,356'Image forming apparatus'20107,796,935'Process cartridge and image forming apparatus including same'20107,796,912'Image forming method and apparatus which uses alternating voltage to form an electric field for moving toner'20107,792,463'Image forming apparatus including a brush member to temporarily capture toner'20107,751,753'Cleanerless image forming apparatus'20107,738,803'Image forming method and apparatus for effectively charging an image carrier'20107,734,227'Developing device and image-forming apparatus using multiple-component developer'20107,725,054'Electrifying apparatus, a processing unit, and an image formation apparatus'20107,693,459'Charging device for charging a surface of a latent image bearing member and an image forming apparatus including the charging device'20107,684,732'Process unit and image forming apparatus including the same'20107,676,184'Developing apparatus'20107,664,433'Cleaning of a charging member in an image forming apparatus'20107,539,442'Charging unit, process unit including the same, and image forming apparatus including the same'20097,233,755'Image forming apparatus'20077,202,675'Device and method for measuring toner current'20077,082,277'Contact charger and image forming apparatus'20066,999,699'Contact charger and image forming apparatus'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2007Based in Amagasaki, JP· patent location history
2007–2017Based in Osaka, JP· patent location history
2009–2010Patents assigned to RICOH KK (12)· patent assignee history
2010–2013Based in Minoo, JP· patent location history
2010Based in Minoh, JP· patent location history
2011–2018Patents assigned to RICOH CO LTD (14)· patent assignee history
2013–2018Patents assigned to NAGATOMO YUJI (12)· patent assignee history
2014–2017Patents assigned to ABE KYOKO (5)· patent assignee history
2014–2015Patents assigned to MATSUNO YASUHIDE (5)· patent assignee history
2018Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH CO LTD | 14 | 2011–2018 |
| NAGATOMO YUJIself | 12 | 2013–2018 |
| RICOH KK | 12 | 2009–2010 |
| ABE KYOKO | 5 | 2014–2017 |
| MATSUNO YASUHIDE | 5 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 20 | 2007–2017 |
| Minoo, JP | 4 | 2010–2013 |
| Amagasaki, JP | 3 | 2006–2007 |
| Kanagawa, JP | 2 | 2018 |
| Minoh, JP | 2 | 2010 |