A61K 47/16
Containing nitrogen
Official title: containing nitrogen, {e.g. nitro-, nitroso-, azo-compounds, nitriles, cyanates}
A61K47/16 (Containing nitrogen) appears on 4,235 US grants and 7,757 published applications in this corpus.
Search patents in A61K- Granted patents
- 4,235
- Published applications
- 7,757
- Assignees
- 2,951
- Inventors
- 12,795
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 14 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 18 | 0 |
| 1988 | 10 | 0 |
| 1989 | 29 | 0 |
| 1990 | 31 | 0 |
| 1991 | 32 | 0 |
| 1992 | 35 | 0 |
| 1993 | 24 | 0 |
| 1994 | 21 | 0 |
| 1995 | 22 | 0 |
| 1996 | 50 | 0 |
| 1997 | 72 | 0 |
| 1998 | 52 | 0 |
| 1999 | 66 | 0 |
| 2000 | 49 | 0 |
| 2001 | 61 | 29 |
| 2002 | 60 | 93 |
| 2003 | 51 | 128 |
| 2004 | 45 | 127 |
| 2005 | 38 | 133 |
| 2006 | 34 | 91 |
| 2007 | 46 | 119 |
| 2008 | 35 | 150 |
| 2009 | 32 | 156 |
| 2010 | 67 | 157 |
| 2011 | 71 | 161 |
| 2012 | 79 | 172 |
| 2013 | 107 | 210 |
| 2014 | 142 | 244 |
| 2015 | 141 | 291 |
| 2016 | 201 | 316 |
| 2017 | 199 | 377 |
| 2018 | 192 | 396 |
| 2019 | 219 | 517 |
| 2020 | 273 | 497 |
| 2021 | 259 | 570 |
| 2022 | 277 | 554 |
| 2023 | 249 | 596 |
| 2024 | 268 | 621 |
| 2025 | 322 | 574 |
| 2026 | 172 | 478 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Topical anaesthetic composition having improved vasoconstrictor stability6 Oct 2026US 12,751,946 B2Animal Ethics Pty Ltd
- Protease composition6 Oct 2026US 12,751,997 B2Anatara Lifesciences Limited
- Composition containing buffer6 Oct 2026US 12,752,008 B2Perseus Proteomics Inc.
- Amorphous substances, crystals, pharmaceutical compositions, preparation methods and uses of thiohydantoin compound or pharmaceutically acceptable salt thereof6 Oct 2026US 12,753,173 B2Suzhou Kintor Pharmaceuticals, Inc.
- Long-acting low-toxicity novel cationic lipid compounds and composition thereof29 Sep 2026US 12,746,208 B2Beijing Youcare Kechuang Pharmaceutical Technology Co., Ltd.
- Cosmetic composition comprising an endolysin and an organic filler8 Oct 2026US 2026/0306385 A1L'oreal
- Sulfurized imidazoles in ophthalmic formulations8 Oct 2026US 2026/0306431 A1Geneiii Biotech Company Ltd.
- N-n-dimethyltryptamine (dmt) and dmt analog oral transmucosal film compositions, methods of making, and methods of use thereof8 Oct 2026US 2026/0306454 A1
- Sulfurized imidazoles in ophthalmic formulations8 Oct 2026US 2026/0306457 A1Geneiii Biotech Company Ltd.
- Pyridylaminoacetic acid compound and polyoxyethylene castor oil-containing pharmaceutical composition8 Oct 2026US 2026/0306472 A1Santen Pharmaceutical Co., Ltd.
Most cited
By later US patents
- Cationic lipids for intracellular delivery of biologically active molecules586US 5,459,127 AVical Incorporated · 1995
- Cationic lipids for intracellular delivery of biologically active molecules545US 5,264,618 AVical Incorporated · 1993
- Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use354US 5,091,171 A1992
- Engineered nucleic acids encoding a modified erythropoietin and their expression312US 8,710,200 B2Moderna Therapeutics, Inc. · 2014
- Drug delivery system utilizing thermosetting gels307US 4,478,822 AMerck & Co., Inc. · 1984