A01N 43/44
Three- or four-membered rings
Official title: three- or four-membered rings
A01N43/44 (Three- or four-membered rings) appears on 58 US grants and 50 published applications in this corpus.
Search patents in A01N- Granted patents
- 58
- Published applications
- 50
- Assignees
- 43
- Inventors
- 223
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 3 | 2 |
| 2015 | 3 | 5 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 3 | 1 |
| 2021 | 0 | 4 |
| 2022 | 0 | 1 |
| 2023 | 1 | 10 |
| 2024 | 0 | 3 |
| 2025 | 3 | 5 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pesticidally active cyclic amine compounds21 Apr 2026US 12,604,895 B2Syngenta Crop Protection AG
- Herbicidal compounds25 Nov 2025US 12,479,804 B2Syngenta Crop Protection AG
- Herbicidal 2-azaspiro[3-5]nonane compounds26 Aug 2025US 12,398,101 B2Syngenta Crop Protection AG
- Beta-lactams and their use as herbicides19 Aug 2025US 12,389,910 B2BASF SE
- Use as rodenticides of compounds that inhibit blood coagulation20 Jun 2023US 11,678,659 B2
- Pesticidally active bicyclic compounds17 Sep 2026US 2026/0271927 A1Syngenta Crop Protection AG
- Beta-lactams and their use as herbicides27 Aug 2026US 2026/0248132 A1BASF SE
- Haloalkyl sulfonanilide compound and herbicide containing the same18 Sep 2025US 2025/0289788 A1Sds Biotech K. K.
- Agriculture composition5 Jun 2025US 2025/0176547 A1Nippon Kayaku Kabushiki Kaisha
- Method for pathogens, microorganisms, and parasites inactivation24 Apr 2025US 2025/0127168 A1New York Blood Center, Inc.
Most cited
By later US patents
- 1-Carbalkoxyalkyl-3-aryloxy-4-(2'-carboxyphenyl)-azetidin-2-ones29US 4,479,900 AChevron Research Company · 1984
- 1-carbalkoxyalkyl-3-aryloxy-4-(substituted-2'-carboxyphenyl)-azet-2-ones as plant growth regulators and herbicides27US 4,620,867 AChevron Research Company · 1986
- Fungicides27US 4,999,381 AImperial Chemical Industries PLC · 1991
- 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones as plant growth regulators25US 4,443,372 AChevron Research Company · 1984
- Herbicidal use of 4-amino-3,3-dimethyl-1-phenyl-2-azetidinones19US 4,075,000 AEli Lilly and Company · 1978