A01C 23/00
Distributing devices specially adapted for liquid manure or other fertilising liquid, including
Official title: Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
A01C23/00 (Distributing devices specially adapted for liquid manure or other fertilising liquid, including) appears on 1,610 US grants and 1,665 published applications in this corpus.
Search patents in A01C- Granted patents
- 1,610
- Published applications
- 1,665
- Assignees
- 605
- Inventors
- 2,581
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 14 | 0 |
| 1978 | 18 | 0 |
| 1979 | 10 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 19 | 0 |
| 1983 | 6 | 0 |
| 1984 | 13 | 0 |
| 1985 | 5 | 0 |
| 1986 | 18 | 0 |
| 1987 | 15 | 0 |
| 1988 | 14 | 0 |
| 1989 | 15 | 0 |
| 1990 | 19 | 0 |
| 1991 | 10 | 0 |
| 1992 | 11 | 0 |
| 1993 | 10 | 0 |
| 1994 | 18 | 0 |
| 1995 | 13 | 0 |
| 1996 | 13 | 0 |
| 1997 | 10 | 0 |
| 1998 | 21 | 0 |
| 1999 | 22 | 0 |
| 2000 | 24 | 0 |
| 2001 | 20 | 4 |
| 2002 | 17 | 29 |
| 2003 | 16 | 15 |
| 2004 | 24 | 27 |
| 2005 | 19 | 29 |
| 2006 | 23 | 23 |
| 2007 | 11 | 30 |
| 2008 | 10 | 20 |
| 2009 | 18 | 25 |
| 2010 | 32 | 32 |
| 2011 | 17 | 35 |
| 2012 | 20 | 31 |
| 2013 | 14 | 32 |
| 2014 | 36 | 62 |
| 2015 | 48 | 63 |
| 2016 | 57 | 86 |
| 2017 | 56 | 87 |
| 2018 | 69 | 104 |
| 2019 | 105 | 136 |
| 2020 | 113 | 123 |
| 2021 | 77 | 135 |
| 2022 | 75 | 141 |
| 2023 | 85 | 118 |
| 2024 | 116 | 114 |
| 2025 | 107 | 105 |
| 2026 | 69 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A01C 23/04Distributing under pressure736
- A01C 23/02Special arrangements for delivering the liquid directly into the soil556
- A01C 23/007Metering or regulating systems368
- A01C 23/008Tanks, chassis or related parts267
- A01C 23/001Sludge spreaders92
- A01C 23/006Distribution of liquid fertilisers by gravity flow28
Recent patents
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- Systems and methods for handling fluid for application to agricultural fields1 Oct 2026US 2026/0293796 A1Capstan Ag Systems, Inc.
Most cited
By later US patents
- Liquid dispenser for seed planter188US 5,730,074 AFarmer Fabrications, Inc. · 1998
- Soil chemical sensor and precision agricultural chemical delivery system and method154US 5,033,397 AAguila Corporation · 1991
- High pressure liquid containment joint for hydraulic aerator149US 5,291,842 AThe Toro Company · 1994
- Combination grid recipe and depth control system145US 5,931,882 ARaven Industries, Inc. · 1999
- Multi-variable rate dispensing system for agricultural machines137US 5,913,915 AAg-Chem Equipment Co., Inc. · 1999