Inventor
Junichiro Otsubo
Inventor
Osaka, JP
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography63%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments19%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%
C07DHeterocyclic compounds6%
G03CPhotosensitive materials for photographic purposes6%
PatentTitleYear
10,007,199Single-layer electrophotographic photosensitive member, process cartridge, and image forming apparatus20189,939,744Multi-layer electrophotographic photosensitive member20189,213,229'Positively chargeable electrophotographic photosensitive member and image forming apparatus'20159,158,264'Electrophotographic photosensitive member and image forming apparatus including electrophotographic photosensitive member'20158,765,337'Multilayer type electrophotographic photoconductor and image forming apparatus'20148,686,133'Oxo-titanylphthalocyanine crystal, method for producing the same and electrophotographic photoreceptor'20148,242,261'Oxo-titanylphthalocyanine crystal, method for producing the same, and electrophotographic photoreceptor'20127,855,286'Titanyl phthalocyanin crystal, method for preparing the same and electrophotographic photoconductor'20107,693,454'Image forming apparatus'20107,399,564'Electrophotographic photoconductor'20084,795,814'Process for preparing novel dihydropyridine derivatives'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Based in Tokushima, JP· patent location history
2008–2014Patents assigned to KYOCERA MITA CORP (5)· patent assignee history
2008–2018Based in Osaka, JP· patent location history
2012–2014Patents assigned to AZUMA JUN (3)· patent assignee history
2012–2014Patents assigned to MARUO KEIJI (3)· patent assignee history
2012–2014Patents assigned to OTSUBO JUNICHIRO (3)· patent assignee history
2014–2018Patents assigned to KYOCERA DOCUMENT SOLUTIONS INC (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KYOCERA DOCUMENT SOLUTIONS INC | 5 | 2014–2018 |
| KYOCERA MITA CORP | 5 | 2008–2014 |
| AZUMA JUN | 3 | 2012–2014 |
| MARUO KEIJI | 3 | 2012–2014 |
| OTSUBO JUNICHIROself | 3 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 10 | 2008–2018 |
| Tokushima, JP | 1 | 1989 |