Aromatic heterocyclic derivative, and organic electroluminescent element, illumination device, and display device using aromatic heterocyclic derivative
US-12559459-B2 · Feb 24, 2026 · US
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Katoh Eisaku patents
Katoh Eisaku is listed as an inventor on 21 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Katoh Eisaku |
| Total patents | 21 |
| First publication | Jun 2, 2015 |
| Latest publication | Feb 24, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Organic electroluminescent element, display device and lighting device
US-10109800-B2 · Oct 23, 2018 · US
Organic electroluminescent element, display device and lighting device
US-10017691-B2 · Jul 10, 2018 · US
Aromatic heterocyclic derivative, and organic electroluminescent element, illumination device, and display device using aromatic heterocyclic derivative
US-2018037546-A1 · Feb 8, 2018 · US
Organic electroluminescent element
US-9780322-B2 · Oct 3, 2017 · US
Organic electroluminescent element, display device and illuminating device
US-9692000-B2 · Jun 27, 2017 · US
Organic electroluminescent element, display device and illuminating device
US-9634275-B2 · Apr 25, 2017 · US
Organic electroluminescent element, display device and illuminating device
US-9634276-B2 · Apr 25, 2017 · US
Organic electroluminescent element, display device and lighting device
US-9627630-B2 · Apr 18, 2017 · US
Organic electroluminescent element, and illumination device and display device each comprising the element
US-9617255-B2 · Apr 11, 2017 · US
Recent patents
Latest publications not already listed above.
Organic electroluminescent element, display device and lighting device
US-9590188-B2 · Mar 7, 2017 · US
Organic electroluminescent element, display device and lighting device
US-2017054092-A1 · Feb 23, 2017 · US
Organic electroluminescent element material, organic electroluminescent element, display device, and lighting device
US-9379337-B2 · Jun 28, 2016 · US
Organic electroluminescent element, display device and lighting device
US-9293715-B2 · Mar 22, 2016 · US
Organic electroluminescent element, display device and lighting device
US-2015318499-A1 · Nov 5, 2015 · US
Organic electroluminescent element material, organic electroluminescent element, display device,and lighting device
US-2015295191-A1 · Oct 15, 2015 · US
Organic electroluminescent element material, organic electroluminescent element, display device, and lighting device
US-9099659-B2 · Aug 4, 2015 · US
Organic electroluminescent element, display device, illuminating device and condensed polycyclic heterocyclic compound
US-9090819-B2 · Jul 28, 2015 · US
Organic electroluminescent element, lighting device and display device
US-2015179958-A1 · Jun 25, 2015 · US
Organic electroluminescent element, display device and lighting device
US-2015162550-A1 · Jun 11, 2015 · US
Organic electroluminescent element, display device and lighting device
US-9048434-B2 · Jun 2, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Konica Minolta Inc | 20 |
| Katoh Eisaku | 3 |
| Katakura Rie | 2 |
| Sugita Shuichi | 1 |
| Sugino Motoaki | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K2211/1029 | 21 |
| C09K11/06 | 21 |
| C09K2211/1044 | 21 |
| H10K50/11 | 20 |
| C09K2211/185 | 19 |