Inventor
Hirofumi Yamanami
Inventor
Shizuoka, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography86%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
9,063,441'Electrophotographic photoconductor, image forming apparatus, and process cartridge'20157,348,115'Electrophotographic photoconductor, process cartridge, image forming apparatus and image forming method'20087,267,914'Electrophotographic photoconductor, process cartridge, image forming apparatus and image forming method'20076,355,390'Electrophotographic photoconductor, production process thereof, electrophotographic image forming method and apparatus, and process cartridge'20024,871,635'Electrophotographic photoconductor layered element comprising salt material undercoat layer on conductive support'19894,775,605'Layered photosensitive material for electrophotography'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2008Patents assigned to RICOH KK (5)· patent assignee history
1988Based in Numazu, JP· patent location history
1989Based in Namazu, JP· patent location history
2002–2015Based in Shizuoka, JP· patent location history
2008Based in Sunto-gun, JP· patent location history
2015Patents assigned to ENOMOTO KOJI (1)· patent assignee history
2015Patents assigned to ESAKI NAOYUKI (1)· patent assignee history
2015Patents assigned to RICOH CO LTD (1)· patent assignee history
2015Patents assigned to YAMANAMI HIROFUMI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 5 | 1988–2008 |
| ENOMOTO KOJI | 1 | 2015 |
| ESAKI NAOYUKI | 1 | 2015 |
| RICOH CO LTD | 1 | 2015 |
| YAMANAMI HIROFUMIself | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shizuoka, JP | 3 | 2002–2015 |
| Sunto-gun, JP | 1 | 2008 |
| Namazu, JP | 1 | 1989 |
| Numazu, JP | 1 | 1988 |