A01K 1/01
Removal of dung or urine
Official title: Removal of dung or urine {; Removal of manure from stables}(A01K1/015 takes precedence)
A01K1/01 (Removal of dung or urine) appears on 1,609 US grants and 1,529 published applications in this corpus.
Search patents in A01K- Granted patents
- 1,609
- Published applications
- 1,529
- Assignees
- 496
- Inventors
- 2,556
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 13 | 0 |
| 1978 | 15 | 0 |
| 1979 | 9 | 0 |
| 1980 | 12 | 0 |
| 1981 | 16 | 0 |
| 1982 | 14 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 15 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 25 | 0 |
| 1989 | 32 | 0 |
| 1990 | 21 | 0 |
| 1991 | 31 | 0 |
| 1992 | 30 | 0 |
| 1993 | 33 | 0 |
| 1994 | 28 | 0 |
| 1995 | 25 | 0 |
| 1996 | 40 | 0 |
| 1997 | 34 | 0 |
| 1998 | 57 | 0 |
| 1999 | 28 | 0 |
| 2000 | 30 | 0 |
| 2001 | 33 | 9 |
| 2002 | 44 | 22 |
| 2003 | 27 | 25 |
| 2004 | 20 | 42 |
| 2005 | 24 | 45 |
| 2006 | 36 | 49 |
| 2007 | 22 | 47 |
| 2008 | 15 | 44 |
| 2009 | 22 | 57 |
| 2010 | 22 | 45 |
| 2011 | 25 | 53 |
| 2012 | 40 | 55 |
| 2013 | 41 | 57 |
| 2014 | 45 | 58 |
| 2015 | 38 | 72 |
| 2016 | 38 | 75 |
| 2017 | 49 | 75 |
| 2018 | 44 | 66 |
| 2019 | 54 | 78 |
| 2020 | 67 | 89 |
| 2021 | 51 | 72 |
| 2022 | 58 | 74 |
| 2023 | 44 | 71 |
| 2024 | 47 | 87 |
| 2025 | 81 | 85 |
| 2026 | 56 | 77 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A01K 1/0107Cat trays1,257
- A01K 1/0103Of liquid manure82
- A01K 1/0128By means of scrapers or the like moving continuously82
- A01K 1/0135By means of conveyor belts40
- A01K 1/0132By means of scrapers or the like moving to-and-fro or step-by-step32
- A01K 1/0146By means of manure-loaders, manure-ramps or manure-elevators associated with in-house removal systems17
- A01K 1/0142By means of a moving piston13
- A01K 1/0139By means of screw conveyors9
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- Self-cleaning litter box24 Sep 2026US 2026/0283097 A1Radio Systems Corporation
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- False-detection prevention litter box24 Sep 2026US 2026/0283099 A1Petpivot Inc
Most cited
By later US patents
- Apparatus for milking animals127US 5,816,190 A1998
- Electro-kinetic ionic air refreshener-conditioner for pet shelter and litter box109US 6,312,507 B1Sharper Image Corporation · 2001
- Automatic cat litter device and method92US 5,662,066 A1997
- Self-cleaning pet toilet84US 4,729,342 A1988
- Litterbox for domestic animals82US 5,107,797 A1992