C09K 2211/1044
Containing two nitrogen atoms as heteroatoms
Official title: containing two nitrogen atoms as heteroatoms
C09K2211/1044 (Containing two nitrogen atoms as heteroatoms) appears on 2,379 US grants and 3,564 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,379
- Published applications
- 3,564
- Assignees
- 507
- Inventors
- 3,623
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 8 |
| 2003 | 8 | 29 |
| 2004 | 24 | 78 |
| 2005 | 20 | 91 |
| 2006 | 31 | 106 |
| 2007 | 40 | 147 |
| 2008 | 44 | 108 |
| 2009 | 62 | 138 |
| 2010 | 93 | 144 |
| 2011 | 110 | 146 |
| 2012 | 104 | 154 |
| 2013 | 92 | 160 |
| 2014 | 140 | 165 |
| 2015 | 139 | 192 |
| 2016 | 152 | 267 |
| 2017 | 166 | 264 |
| 2018 | 210 | 191 |
| 2019 | 202 | 134 |
| 2020 | 149 | 135 |
| 2021 | 114 | 153 |
| 2022 | 76 | 119 |
| 2023 | 110 | 192 |
| 2024 | 113 | 194 |
| 2025 | 98 | 137 |
| 2026 | 79 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Preparation method and chiral sieving application of novel 12-crown-4 covalent organic frameworks6 Oct 2026US 12,753,169 B2Chongqing University of Arts and Sciences
- Organic electroluminescent element and electronic device6 Oct 2026US 12,753,341 B2Idemitsu Kosan Co., Ltd.
- Light-emitting device including organometallic compound, electronic device including the light-emitting device, and the organometallic compound6 Oct 2026US 12,757,627 B2Samsung Display Co., Ltd.
- Organic light-emitting device and apparatus including the same6 Oct 2026US 12,757,632 B2Samsung Display Co., Ltd.
- Organometallic compound, organic light-emitting device including the organometallic compound, and electronic apparatus including the organic light-emitting device22 Sep 2026US 12,745,557 B2Samsung Display Co., Ltd.
- Organic electroluminescent materials and devices8 Oct 2026US 2026/0314250 A1Universal Display Corporation
- Organic electroluminescent materials and devices8 Oct 2026US 2026/0314251 A1Universal Display Corporation
- Composition, light-emitting device, electronic device including the light-emitting device, electronic apparatus including the light-emitting device, and organometallic compound8 Oct 2026US 2026/0314252 A1Samsung Display Co., Ltd.
- Organic electroluminescent materials and devices1 Oct 2026US 2026/0305156 A1Universal Display Corporation
- Organic electroluminescent material and device thereof1 Oct 2026US 2026/0305158 A1Beijing Summer Sprout Technology Co., Ltd.
Most cited
By later US patents
- Complexes with tridentate ligands1,471US 7,279,704 B2Universal Display Corporation · 2007
- Organic light emitting materials and devices1,135US 6,687,266 B1Universal Display Corporation · 2004
- Luminescent compounds with carbene ligands938US 7,393,599 B2University of Southern California · 2008
- Cyclometallated iridium carbene complexes for use as hosts916US 7,154,114 B2Universal Display Corporation · 2006
- Organometallic compounds for use in electroluminescent devices911US 7,534,505 B2Universal Display Corporation · 2009