C07C 2603/40
Containing four condensed rings
Official title: containing four condensed rings
C07C2603/40 (Containing four condensed rings) appears on 813 US grants and 972 published applications in this corpus.
Search patents in C07C- Granted patents
- 813
- Published applications
- 972
- Assignees
- 336
- Inventors
- 1,983
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 8 | 0 |
| 1988 | 13 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 7 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 22 | 0 |
| 1996 | 20 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 3 |
| 2002 | 5 | 15 |
| 2003 | 11 | 12 |
| 2004 | 11 | 29 |
| 2005 | 11 | 31 |
| 2006 | 11 | 36 |
| 2007 | 9 | 37 |
| 2008 | 17 | 44 |
| 2009 | 12 | 45 |
| 2010 | 26 | 52 |
| 2011 | 33 | 54 |
| 2012 | 42 | 51 |
| 2013 | 35 | 42 |
| 2014 | 26 | 48 |
| 2015 | 56 | 55 |
| 2016 | 35 | 46 |
| 2017 | 37 | 54 |
| 2018 | 43 | 38 |
| 2019 | 33 | 37 |
| 2020 | 30 | 32 |
| 2021 | 24 | 38 |
| 2022 | 21 | 38 |
| 2023 | 22 | 47 |
| 2024 | 27 | 37 |
| 2025 | 21 | 27 |
| 2026 | 26 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tetracycline derivatives for treating neurodegenerative or neuroinflammatory diseases29 Sep 2026US 12,746,247 B2Institut Du Cerveau Et De La Moelle Epiniere
- Organic electroluminescent element, compound, and electronic equipment28 Jul 2026US 12,692,435 B2Idemitsu Kosan Co., Ltd.
- Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same28 Jul 2026US 12,696,683 B2DuPont Specialty Materials Korea Ltd.
- Material for photoelectric conversion elements for image pickup, and photoelectric conversion element for image pickup14 Jul 2026US 12,685,013 B2Nippon Steel Chemical & Material Co., Ltd.
- Carboxylic acid or carboxylic acid ester compound having fused-ring structure, method for producing the same, and use of compound16 Jun 2026US 12,655,112 B2FUJIFILM Corporation
- Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same8 Oct 2026US 2026/0314256 A1
- Compound, Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device27 Aug 2026US 2026/0250571 A1Semiconductor Energy Laboratory Co.Ltd.
- Regio-controllable [2+2] benzannulation with two adjacent c(sp3)-h bonds20 Aug 2026US 2026/0242341 A1The Scripps Research Institute
- Method for producing homocoupling reaction product9 Jul 2026US 2026/0193241 A1National University Corporation Hokkaido University
- Compounds, compositions, methods of using, and methods for preparing compounds2 Jul 2026US 2026/0183260 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
Most cited
By later US patents
- Organic electroluminecence device134US 10,435,350 B2Idemitsu Kosan Co., Ltd. · 2019
- 9- (substituted amino) -alpha-6-deoxy-5-oxy tetracycline derivatives, their preparation and their use as antibiotics89US 5,834,450 APfizer Inc. · 1998
- Chemically reactive pyrenyloxy sulfonic acid dyes88US 5,132,432 AMolecular Probes, Inc. · 1992
- 7, 9-substituted tetracycline compounds85US 6,683,068 B2Paratek Pharmaceuticals, Inc. · 2004
- 7-substituted tetracycline compounds84US 6,818,635 B2Paratek Pharmaceuticals, Inc. · 2004