Inventor
Nobuhiko Umezawa
Inventor
Kanagawa, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography71%
LOC1621%
H04NPictorial communication, e.g. television7%
PatentTitleYear
D0574426'Toner cartridge'2008D0568928'Toner cartridge'2008D0554695'Toner cartridge'20077,254,357'Method and apparatus for image forming capable of effectively regulating a toner layer, developing mechanism for the apparatus, and a process cartridge provided in the apparatus'20077,177,573'Image forming apparatus with reversely rotated developer bearing members'20076,795,674'Developing device for an image forming apparatus'20046,775,506'Method and apparatus for image developing capable of effectively forming an even development agent layer'20046,643,486'Developing device for an image forming apparatus'20036,295,438'Method and apparatus for forming an image capable of supplying a proper amount of a lubricant to each image forming section'20015,953,568'Developing unit for an image forming apparatus having a magnetic rotating blade agitator'19995,848,329'Image forming apparatus having a mounting/dismounting mechanism'19985,797,063'Image forming apparatus and cleaning device for transfer material conveyor belt'19985,374,980'Color image forming apparatus utilizing liquid development'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2008Patents assigned to RICOH KK (13)· patent assignee history
1994Based in Gyouda, JP· patent location history
1998–2007Based in Yokohama, JP· patent location history
1999–2008Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 13 | 1994–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 8 | 1999–2008 |
| Yokohama, JP | 4 | 1998–2007 |
| Gyouda, JP | 1 | 1994 |