C07D 501/38
Methylene radicals, substituted by nitrogen atoms
Official title: Methylene radicals, substituted by nitrogen atoms; Lactams thereof with the 2-carboxyl group; Methylene radicals substituted by nitrogen-containing hetero rings attached by the ring nitrogen atom; Quaternary compounds thereof
C07D501/38 (Methylene radicals, substituted by nitrogen atoms) appears on 163 US grants and 58 published applications in this corpus.
Search patents in C07D- Granted patents
- 163
- Published applications
- 58
- Assignees
- 57
- Inventors
- 311
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 10 | 0 |
| 1990 | 16 | 0 |
| 1991 | 14 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 3 |
| 2004 | 1 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 4 |
| 2007 | 0 | 2 |
| 2008 | 2 | 8 |
| 2009 | 4 | 1 |
| 2010 | 5 | 4 |
| 2011 | 2 | 2 |
| 2012 | 4 | 4 |
| 2013 | 2 | 4 |
| 2014 | 2 | 3 |
| 2015 | 3 | 3 |
| 2016 | 4 | 3 |
| 2017 | 2 | 3 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07D 501/46With the 7-amino radical acylated by carboxylic acids containing hetero rings149
- C07D 501/40With the 7-amino radical acylated by an aliphatic carboxylic acid, which is6
- C07D 501/44With the 7-amino radical acylated by an araliphatic carboxylic acid, which is4
- C07D 501/42With the 7-amino radical acylated by an araliphatic carboxylic acid2
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- Cephalosporin antibacterial compound and pharmaceutical application thereof20 Apr 2023US 2023/0121689 A1Jiangsu Hengrui Medicine Co., Ltd.
- Siderophore cephalosporin conjugates and uses thereof20 Oct 2022US 2022/0332728 A1Nabriva Therapeutics AG
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Most cited
By later US patents
- Cephem compounds63US 4,833,134 ATakeda Chemical Industries, Ltd. · 1989
- Antibacterial cephalosporin compounds43US 5,336,768 AHoffmann-La Roche Inc. · 1994
- Cephalosporins34US 4,406,899 ABristol-Myers Company · 1983
- L-Threonine derivatives of high therapeutic index33US 7,589,233 B2Signature R&D Holdings, LLC · 2009
- Cephem compounds and processes for preparation thereof32US 5,663,163 AFujisawa Pharmaceutical Co., Ltd. · 1997