H10K 50/15
Hole transporting layers
H10K50/15 (Hole transporting layers) appears on 5,288 US grants and 7,683 published applications in this corpus.
Search patents in H10K- Granted patents
- 5,288
- Published applications
- 7,683
- Assignees
- 631
- Inventors
- 6,423
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 5 | 11 |
| 2003 | 4 | 13 |
| 2004 | 4 | 14 |
| 2005 | 8 | 38 |
| 2006 | 11 | 53 |
| 2007 | 14 | 58 |
| 2008 | 20 | 48 |
| 2009 | 20 | 66 |
| 2010 | 37 | 64 |
| 2011 | 45 | 73 |
| 2012 | 45 | 144 |
| 2013 | 73 | 164 |
| 2014 | 105 | 272 |
| 2015 | 239 | 431 |
| 2016 | 259 | 429 |
| 2017 | 339 | 588 |
| 2018 | 416 | 698 |
| 2019 | 524 | 762 |
| 2020 | 509 | 671 |
| 2021 | 488 | 670 |
| 2022 | 483 | 587 |
| 2023 | 473 | 592 |
| 2024 | 476 | 517 |
| 2025 | 425 | 414 |
| 2026 | 259 | 305 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aromatic amine derivative, and organic electroluminescent element using same6 Oct 2026US 12,753,145 B2Idemitsu Kosan Co., Ltd.
- Light-emitting device and light-emitting display device including the same6 Oct 2026US 12,757,567 B2LG Display Co., Ltd.
- Organic electroluminescence device, light emitting device, organic electroluminescence display device and electronic device6 Oct 2026US 12,757,568 B2Idemitsu Kosan Co., Ltd.
- Light-emitting device and method of manufacturing the same, display panel and display apparatus6 Oct 2026US 12,757,569 B2Beijing BOE Technology Development Co., Ltd.
- Light emitting device6 Oct 2026US 12,757,625 B2Samsung Display Co., Ltd.
- Light-emitting device including condensed cyclic compound, electronic apparatus and electronic device each including the light-emitting device, and the condensed cyclic compound8 Oct 2026US 2026/0314171 A1Samsung Display Co., Ltd.
- Light-emitting device including organometallic compound, electronic apparatus including the light-emitting device, and the organometallic compound8 Oct 2026US 2026/0314172 A1Samsung Display Co., Ltd.
- Film, perovskite light emitting device comprising the same and method of manufacturing the perovskite light emitting device8 Oct 2026US 2026/0314253 A1Seoul National University R&Db Foundation
- Organic-light emitting diode1 Oct 2026US 2026/0298429 A1Pictiva Displays International Limited
- Display panel and display device1 Oct 2026US 2026/0305064 A1Boe Technology Group Co., Ltd.
Most cited
By later US patents
- Electroluminescent device with anthracene derivatives hole transport layer267US 6,465,115 B2Eastman Kodak Company · 2002
- Organic electroluminescent devices221US 6,423,429 B1International Manufacturing and Engineering Services Co., Ltd. · 2002
- Cascaded organic electroluminescent devices with improved voltage stability213US 6,717,358 B1Eastman Kodak Company · 2004
- Organic electroluminescent device, group of organic electroluminescent devices208US 6,589,673 B1International Manufacturing and Engineering Services Co., Ltd. · 2003
- Light-emitting element179US 8,994,263 B2Semiconductor Energy Laboratory Co.Ltd. · 2015