C09K 2211/1441
Heterocyclic
C09K2211/1441 (Heterocyclic) appears on 551 US grants and 815 published applications in this corpus.
Search patents in C09K- Granted patents
- 551
- Published applications
- 815
- Assignees
- 347
- Inventors
- 1,722
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 6 |
| 2003 | 1 | 22 |
| 2004 | 9 | 37 |
| 2005 | 9 | 47 |
| 2006 | 19 | 38 |
| 2007 | 23 | 48 |
| 2008 | 20 | 35 |
| 2009 | 13 | 49 |
| 2010 | 37 | 55 |
| 2011 | 22 | 53 |
| 2012 | 24 | 36 |
| 2013 | 55 | 45 |
| 2014 | 31 | 32 |
| 2015 | 38 | 38 |
| 2016 | 32 | 40 |
| 2017 | 32 | 34 |
| 2018 | 33 | 29 |
| 2019 | 28 | 21 |
| 2020 | 20 | 23 |
| 2021 | 23 | 26 |
| 2022 | 19 | 22 |
| 2023 | 15 | 30 |
| 2024 | 23 | 21 |
| 2025 | 10 | 13 |
| 2026 | 11 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2211/1466Containing nitrogen as the only heteroatomIndexing code281
- C09K 2211/1458Containing sulfur as the only heteroatomIndexing code173
- C09K 2211/1483Containing nitrogen and sulfur as heteroatomsIndexing code122
- C09K 2211/1475Containing nitrogen and oxygen as heteroatomsIndexing code100
- C09K 2211/1491Containing other combinations of heteroatomsIndexing code84
- C09K 2211/145Containing oxygen as the only heteroatomIndexing code79
Recent patents
- Humidity-sensing structural color emitting laminate and structural color display device self-powered by triboelectricity including the same laminate8 Sep 2026US 12,730,075 B2University-Industry Foundation, Yonsei University
- Electrochromic device with improved cycling stability1 Sep 2026US 12,724,312 B2Ambilight Inc.
- Biodegradable textile fibers with inherent color and properties18 Aug 2026US 12,709,640 B2The Trustees of Columbia University in the City of New York
- Dyes undergoing changes in color and fluorescence upon binding of organic oxo compounds18 Aug 2026US 12,710,366 B2Bundesrepublik Deutschland, vertreten durch den Bundesminister für Wirtschaft und Energie, dieser vertreten durch den Präsidenten der Bundesanstalt für Materialforschung und -prüfung, (BAM)
- Electroluminescent element, organic electroluminescent element, and electronic appliance9 Jun 2026US 12,649,731 B2Idemitsu Kosan Co., Ltd.
- Benzoporphyrin analogs, conjugates, and methods of use thereof1 Oct 2026US 2026/0295049 A1
- Photochromic compound, propargyl alcohol compound, curable composition, optical article, lens, and spectacles24 Sep 2026US 2026/0286216 A1Tokuyama Corporation
- Dhnt monomers and polymer dyes with modified photophysical properties17 Sep 2026US 2026/0275028 A1Beckman Coulter, Inc.
- Self-healing photochromic elastomer compositions for wearable ultraviolet-sensors6 Aug 2026US 2026/0227236 A1The Regents of the University of Michigan
- Organic light-emitting device and electronic apparatus including the same6 Aug 2026US 2026/0231600 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Organic light emitting diodes for production of polarized light92US 7,037,599 B2Eastman Kodak Company · 2006
- Carbazole-containing materials in phosphorescent light emitting diodes44US 8,221,905 B2Universal Display Corporation · 2012
- Polymeric compound and organic luminescence device40US 7,238,435 B2Canon Kabushiki Kaisha · 2007
- Electroluminescent materials and methods of manufacture and use39US 7,241,512 B23M Innovative Properties Company · 2007
- Sub-diffraction limit image resolution and other imaging techniques38US 7,838,302 B2President and Fellows of Harvard College · 2010