C09K 2211/1018
Heterocyclic compounds
C09K2211/1018 (Heterocyclic compounds) appears on 5,949 US grants and 9,369 published applications in this corpus.
Search patents in C09K- Granted patents
- 5,949
- Published applications
- 9,369
- Assignees
- 1,142
- Inventors
- 8,121
- 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 | 30 |
| 2003 | 24 | 83 |
| 2004 | 61 | 168 |
| 2005 | 54 | 212 |
| 2006 | 81 | 235 |
| 2007 | 96 | 275 |
| 2008 | 89 | 210 |
| 2009 | 121 | 281 |
| 2010 | 190 | 289 |
| 2011 | 214 | 309 |
| 2012 | 203 | 304 |
| 2013 | 214 | 324 |
| 2014 | 252 | 333 |
| 2015 | 309 | 395 |
| 2016 | 295 | 526 |
| 2017 | 350 | 552 |
| 2018 | 420 | 559 |
| 2019 | 428 | 460 |
| 2020 | 392 | 505 |
| 2021 | 325 | 553 |
| 2022 | 334 | 544 |
| 2023 | 383 | 711 |
| 2024 | 385 | 737 |
| 2025 | 395 | 456 |
| 2026 | 312 | 315 |
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.
- 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 molecules for optoelectronic devices6 Oct 2026US 12,753,192 B2Samsung Display Co., Ltd.
- 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 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