C09K 2211/1025
Characterised by ligands
Official title: characterised by ligands
C09K2211/1025 (Characterised by ligands) appears on 4,890 US grants and 7,290 published applications in this corpus.
Search patents in C09K- Granted patents
- 4,890
- Published applications
- 7,290
- Assignees
- 968
- Inventors
- 6,607
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 3 |
| 2002 | 7 | 29 |
| 2003 | 22 | 78 |
| 2004 | 56 | 164 |
| 2005 | 52 | 201 |
| 2006 | 79 | 230 |
| 2007 | 95 | 274 |
| 2008 | 85 | 208 |
| 2009 | 120 | 278 |
| 2010 | 186 | 287 |
| 2011 | 212 | 305 |
| 2012 | 200 | 303 |
| 2013 | 212 | 319 |
| 2014 | 250 | 327 |
| 2015 | 300 | 380 |
| 2016 | 291 | 522 |
| 2017 | 346 | 527 |
| 2018 | 400 | 440 |
| 2019 | 392 | 288 |
| 2020 | 321 | 298 |
| 2021 | 234 | 314 |
| 2022 | 189 | 267 |
| 2023 | 242 | 373 |
| 2024 | 217 | 384 |
| 2025 | 211 | 279 |
| 2026 | 156 | 212 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2211/1029Containing one nitrogen atom as the heteroatomIndexing code3,634
- C09K 2211/1044Containing two nitrogen atoms as heteroatomsIndexing code2,379
- C09K 2211/1088Containing oxygen as the only heteroatomIndexing code1,288
- C09K 2211/1092Containing sulfur as the only heteroatomIndexing code1,195
- C09K 2211/1059Containing three nitrogen atoms as heteroatomsIndexing code1,077
- C09K 2211/1074Containing more than three nitrogen atoms as heteroatomsIndexing code304
- C09K 2211/1096Containing other heteroatomsIndexing code282
Recent patents
- Aromatic amine derivative, and organic electroluminescent element using same6 Oct 2026US 12,753,145 B2Idemitsu Kosan Co., Ltd.
- 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.
- Perovskite-organic chromophore based X-ray imagining scintillator6 Oct 2026US 12,755,859 B2King Abdullah University of Science and Technology
- Organic electroluminescent materials and devices6 Oct 2026US 12,757,626 B2Universal Display Corporation
- Organic electroluminescent materials and devices8 Oct 2026US 2026/0308446 A1Universal Display Corporation
- Organic electroluminescent materials and devices8 Oct 2026US 2026/0314249 A1Universal Display Corporation
- 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.
Most cited
By later US patents
- OLEDs doped with phosphorescent compounds1,989US 6,303,238 B1The Trustees of Princeton University · 2001
- 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
- Phosphorescent compounds and devices comprising the same1,017US 6,835,469 B2Universal Display Corporation · 2004
- OLEDs utilizing multidentate ligand systems1,005US 7,332,232 B2Universal Display Corporation · 2008