C07D 493/22
In which the condensed system contains four or more hetero rings
Official title: in which the condensed system contains four or more hetero rings
C07D493/22 (In which the condensed system contains four or more hetero rings) appears on 313 US grants and 342 published applications in this corpus.
Search patents in C07D- Granted patents
- 313
- Published applications
- 342
- Assignees
- 198
- Inventors
- 898
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 3 |
| 2003 | 4 | 6 |
| 2004 | 1 | 4 |
| 2005 | 2 | 8 |
| 2006 | 5 | 6 |
| 2007 | 2 | 12 |
| 2008 | 6 | 7 |
| 2009 | 5 | 16 |
| 2010 | 7 | 13 |
| 2011 | 7 | 14 |
| 2012 | 9 | 11 |
| 2013 | 11 | 13 |
| 2014 | 13 | 18 |
| 2015 | 20 | 27 |
| 2016 | 17 | 20 |
| 2017 | 16 | 11 |
| 2018 | 13 | 17 |
| 2019 | 20 | 25 |
| 2020 | 18 | 28 |
| 2021 | 14 | 25 |
| 2022 | 13 | 16 |
| 2023 | 17 | 14 |
| 2024 | 16 | 11 |
| 2025 | 6 | 12 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Covalent organic frameworks26 May 2026US 12,638,144 B2The Regents of the University of California
- Material for forming organic film, substrate for manufacturing semiconductor device, method for forming organic film, patterning process, and compound for forming organic film5 May 2026US 12,619,150 B2Shin-Etsu Chemical Co., Ltd.
- Use of ginkgolide a in the treatment of autism28 Apr 2026US 12,611,394 B2Center for Excellence In Molecular Cell Science, Chinese Academy of Sciences
- Blue thermally activated delayed fluorescent emitters and hosts based on functionalized imidazolyl groups10 Feb 2026US 12,545,678 B2Arizona Board of Regents on Behalf of Arizon State University
- Substituted heteroaryls as thermally assisted delayed fluorescent materials27 Jan 2026US 12,534,462 B2Arizona Board of Regents on behalf of Arizona State University
- A unified strategy for the total syntheses of eribulin and a macrolactam analogue of halichondrin b3 Sep 2026US 2026/0258052 A1William Marsh Rice University
- Improved linker-payloads for antibody conjugation, pharmaceutical compositions and applications thereof20 Aug 2026US 2026/0241021 A1Obi Pharma, Inc.
- Compounds and methods for the treatment of ocular disorders23 Apr 2026US 2026/0109705 A1Azura Ophthalmics Ltd.
- Linker-payload compound, conjugates and applications thereof19 Mar 2026US 2026/0077056 A1Genequantum Healthcare (Suzhou) Co., Ltd.
- Synthesis of tetradecanoic modified graphene as a corrosion inhibitor1 Jan 2026US 2026/0001768 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Selective hydrogenation products of C-076 compounds and derivatives thereof157US 4,199,569 AMerck & Co., Inc. · 1980
- Rigidized trimethine cyanine dyes103US 6,133,445 ACarnegie Mellon University · 2000
- Macrocyclic analogs and methods of their use and preparation90US 6,214,865 B1Eisai Co., Ltd. · 2001
- Macrocyclic compound and uses thereof76US 9,938,288 B1Eisai R&D Management Co., Ltd. · 2018
- Halichondrins and related compounds70US 5,436,238 APresident and Fellows of Harvard College · 1995