A01K 31/04
Dropping-boards
Official title: Dropping-boards; Devices for removing excrement
A01K31/04 (Dropping-boards) appears on 142 US grants and 113 published applications in this corpus.
Search patents in A01K- Granted patents
- 142
- Published applications
- 113
- Assignees
- 73
- Inventors
- 236
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 9 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 8 | 3 |
| 2003 | 3 | 6 |
| 2004 | 3 | 8 |
| 2005 | 7 | 5 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 4 |
| 2010 | 0 | 8 |
| 2011 | 3 | 5 |
| 2012 | 3 | 3 |
| 2013 | 0 | 5 |
| 2014 | 4 | 1 |
| 2015 | 1 | 7 |
| 2016 | 2 | 5 |
| 2017 | 4 | 7 |
| 2018 | 3 | 7 |
| 2019 | 4 | 8 |
| 2020 | 3 | 1 |
| 2021 | 8 | 8 |
| 2022 | 6 | 4 |
| 2023 | 1 | 2 |
| 2024 | 4 | 4 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Welfare-oriented raising house for meat-type ducks12 Aug 2025US 12,382,934 B2Anhui Agricultural University
- Scraper apparatus12 Aug 2025US 12,382,935 B2Tecno Poultry Equipment S.p.A
- Coop cleaning device15 Jul 2025US 12,358,021 B2
- System for analyzing animal secretion images17 Jun 2025US 12,329,128 B2PHYTOBIOTICS Futterzusatzstoffe GmbH
- Litter conditioner and method of using the same19 Nov 2024US 12,144,323 B2Global Nutrient Conditioning LLC
- Chicken nest with egg collector9 Apr 2026US 2026/0096542 A1Obschestvo s Ogranichennoy Otvetstvennostyu Chistoye Prechistoye
- Manure conveying device, in particular for use in barn egg production or broiler production12 Feb 2026US 2026/0041067 A1noltewerk GmbH & Co. KG
- Scraper Apparatus13 Mar 2025US 2025/0081942 A1Tecno Poultry Equipment S.p.A
- Long-distance sampling device for feces in a poultry house14 Nov 2024US 2024/0377286 A1Anhui Agricultural University
- Coop Cleaning Device31 Oct 2024US 2024/0359214 A1
Most cited
By later US patents
- Animal production building and methods of producing animals and processing animal waste57US 5,666,905 AEnviroLogic, Inc. · 1997
- Environmental control system for poultry houses51US 4,700,887 ACornell Research Foundation, Inc. · 1987
- Self-cleaning animal kennel42US 4,011,837 A1977
- Disposable receptacle with integral flexible closure41US 4,779,566 A1988
- High-rise laying hen rearing facility and method35US 5,865,143 ATrustees of University of Arkansas and United States of America · 1999