Inventor
Tsutomu Yamakami
Inventor
Yokohama, JP
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography43%
B41LApparatus or devices for manifolding, duplicating or printing for office or other commercial purposes14%
B42BPermanently attaching together sheets, quires or signatures or permanently attaching objects thereto14%
B42CBookbinding14%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables14%
PatentTitleYear
7,218,877'Charging device, and process cartridge and image forming apparatus including the charging device using the same'20077,062,194'Charging device, and process cartridge and image forming apparatus including the charging device'20065,060,922'Copying paper processing apparatus'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2007Patents assigned to RICOH KK (3)· patent assignee history
1991–2007Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 3 | 1991–2007 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 3 | 1991–2007 |