Inventor
Takahiko Tokumasu
Inventor
Tokyo, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography68%
B41JTypewriters18%
B82YSpecific uses or applications of nanostructures5%
H04MTelephonic communication5%
H04NPictorial communication, e.g. television5%
PatentTitleYear
7,593,682'Image forming apparatus, image forming method, and process cartridge'20097,505,728'Lubricant applying unit, process cartridge, image forming apparatus, and image forming method'20097,496,324'Lubricant applying unit and image forming apparatus'20097,383,013'Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged'20087,295,788'Image forming apparatus and process cartridge'20077,251,437'Image formation apparatus having a body to be charged with specified properties and including the use of a protective material'20077,251,438'Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged'20077,209,699'Lubricant applying unit, process cartridge, image forming apparatus, and image forming method'20077,113,726'Charging device, image forming process cartridge, and image forming apparatus including the charging device'20067,103,301'Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged'20067,058,335'Process cartridge and image forming apparatus with toner fed cleaning mode'20066,987,944'Cleaning device and image forming apparatus using the cleaning device'20066,721,523'Charging device, image forming unit and image forming device'20046,398,345'Image forming method and an apparatus for the same, and a cleaning device'20026,366,751'Image forming apparatus including preselected range between charge injection layer and voltage potential'20025,955,228'Method and apparatus for forming a powder image'19995,208,607'Thermal recording method using drive signal pulse widths changed at time intervals within thermal head temperature measuring time intervals'19935,040,206'Communication apparatus having driving mechanism and speaker-phone'19914,614,949'Transfer-type thermal printer'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–2009Patents assigned to RICOH KK (19)· patent assignee history
1986–2009Based in Atsugi, JP· patent location history
1999–2009Based in Tokyo, JP· patent location history
2002Patents assigned to ARRAY PRINTERS AB (1)· patent assignee history
2002Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 19 | 1986–2009 |
| ARRAY PRINTERS AB | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 12 | 1999–2009 |
| Atsugi, JP | 6 | 1986–2009 |
| Kanagawa, JP | 1 | 2002 |