C07C 323/57
The carbon skeleton being further substituted by nitrogen atoms, not being part
Official title: the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
C07C323/57 (The carbon skeleton being further substituted by nitrogen atoms, not being part) appears on 559 US grants and 553 published applications in this corpus.
Search patents in C07C- Granted patents
- 559
- Published applications
- 553
- Assignees
- 356
- Inventors
- 1,594
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 15 | 0 |
| 1996 | 13 | 0 |
| 1997 | 17 | 0 |
| 1998 | 16 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 17 | 1 |
| 2002 | 19 | 13 |
| 2003 | 17 | 25 |
| 2004 | 15 | 42 |
| 2005 | 17 | 28 |
| 2006 | 23 | 16 |
| 2007 | 9 | 23 |
| 2008 | 15 | 22 |
| 2009 | 11 | 25 |
| 2010 | 18 | 18 |
| 2011 | 14 | 19 |
| 2012 | 11 | 19 |
| 2013 | 16 | 15 |
| 2014 | 13 | 13 |
| 2015 | 13 | 17 |
| 2016 | 11 | 15 |
| 2017 | 15 | 21 |
| 2018 | 7 | 20 |
| 2019 | 17 | 21 |
| 2020 | 19 | 30 |
| 2021 | 27 | 13 |
| 2022 | 18 | 20 |
| 2023 | 14 | 23 |
| 2024 | 4 | 14 |
| 2025 | 18 | 22 |
| 2026 | 16 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Amino acid compositions22 Sep 2026US 12,741,941 B2ThermoLife International, LLC
- Method for producing trisulfide compound or selenotrisulfide compound1 Sep 2026US 12,723,021 B2Kyowa Pharma Chemical Co., Ltd.
- Method for producing methionine1 Sep 2026US 12,723,022 B2Adisseo France S.A.S.
- D-luciferin, D-luciferin derivative, precursor of these compounds and method for producing these compounds25 Aug 2026US 12,715,842 B2Kanto Denka Kogyo Co., Ltd.
- Cystine cationic lipids4 Aug 2026US 12,698,258 B2Translate Bio, Inc.
- Method for preparing l-cysteine hydrochloride hydrate crystals of which particle size is controlled6 Aug 2026US 2026/0226002 A1Cj Cheiljedang Corporation
- Amino acid compositions23 Jul 2026US 2026/0209184 A1ThermoLife International, LLC
- Amino acid compositions16 Jul 2026US 2026/0200858 A1ThermoLife International, LLC
- Amino acid compositions16 Jul 2026US 2026/0200859 A1ThermoLife International, LLC
- Amino acid compositions16 Jul 2026US 2026/0200860 A1ThermoLife International, LLC
Most cited
By later US patents
- Electrochemical sensor containing an enzyme linked to binding molecules bound to a noble metal surface284US 5,834,224 ABoehringer Mannhein GmbH · 1998
- Bicyclic naphthalenic derivatives, a process for preparing the same and human or veterinary medicines and cosmetic compositions containing said derivatives142US 4,826,969 ACentre International de Recherches Dermatologiques (C.I.R.D.) · 1989
- Mercapto-acylamino acid antihypertensives141US 4,929,641 ASchering Corporation · 1990
- Ligands for metabotropic glutamate receptors and inhibitors of NAALADase119US 6,528,499 B1Georgetown University · 2003
- Substrates and inhibitors for prenyl cysteine methyltransferase enzymes75US 5,043,268 AThe Trustees of Princeton University · 1991