Inventor
Keiko Ishidai
Inventor
Tokyo, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography30%
C07CAcyclic or carbocyclic compounds10%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments10%
C07DHeterocyclic compounds5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
G02BOptical elements, systems or apparatus5%
G03CPhotosensitive materials for photographic purposes5%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices5%
H01LSemiconductor devices5%
PatentTitleYear
10,483,471Organic electroluminescent element, method for producing organic electroluminescent element, display, and lighting device20199,062,225'Production process for colorant, colorant composition, toner, ink for ink jet recording and color filter'20158,846,965'Toner for electrophotography and metal-containing compound'20148,729,285'Copper complex compound and electrophotographic toner containing the same'20148,329,368'Electrophotographic toner'20128,269,018'Pyrazolotriazole compound and electrophotographic toner'20127,943,279'Copper complex compound and electrophotographic toner containing the same'20117,270,938'Photopolymerizable composition, light sensitive planographic printing plate material and manufacturing method of planographic printing plate'20076,248,512'Thermally processable photosensitive material, image forming method and antifoggant'2001Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2001Based in Hino, JP· patent location history
2007–2019Based in Hachioji, JP· patent location history
2011–2015Patents assigned to KONICA MINOLTA BUSINESS TECH (6)· patent assignee history
2011–2015Based in Tokyo, JP· patent location history
2012–2015Patents assigned to ISHIDAI KEIKO (5)· patent assignee history
2012–2015Patents assigned to OOKUBO KIMIHIKO (5)· patent assignee history
2012–2014Patents assigned to NAKAHARA ISSEI (4)· patent assignee history
2012–2014Patents assigned to DAIFUKU KOJI (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KONICA MINOLTA BUSINESS TECH | 6 | 2011–2015 |
| ISHIDAI KEIKOself | 5 | 2012–2015 |
| OOKUBO KIMIHIKO | 5 | 2012–2015 |
| NAKAHARA ISSEI | 4 | 2012–2014 |
| DAIFUKU KOJI | 3 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 5 | 2011–2015 |
| Hachioji, JP | 3 | 2007–2019 |
| Hino, JP | 1 | 2001 |