A01K 31/02
Door appliances
Official title: Door appliances; Automatic door-openers
A01K31/02 (Door appliances) appears on 45 US grants and 41 published applications in this corpus.
Search patents in A01K- Granted patents
- 45
- Published applications
- 41
- Assignees
- 24
- Inventors
- 79
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 4 |
| 2018 | 1 | 2 |
| 2019 | 1 | 3 |
| 2020 | 4 | 4 |
| 2021 | 3 | 4 |
| 2022 | 4 | 1 |
| 2023 | 2 | 3 |
| 2024 | 6 | 3 |
| 2025 | 1 | 6 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Door assembly for an animal enclosure29 Sep 2026US 12,745,758 B2Hebe Studio Limited
- Animal crate with swing or drop door12 May 2026US 12,622,409 B2Mid-West Metal Products Company, Inc.
- Door assembly for an animal enclosure31 Mar 2026US 12,588,660 B2Hebe Studio Limited
- Rearing-keeping facility for rearing poultry animals, corresponding poultry animal house and use24 Feb 2026US 12,557,791 B2Big Dutchman International GmbH
- Chicken coop door3 Feb 2026US 12,538,902 B2Xiamen Hedeman Electronic Technology Co., Ltd.
- Automatic door device8 Oct 2026US 2026/0305581 A1
- Door assembly for an animal enclosure9 Jul 2026US 2026/0191172 A1Hebe Studio Limited
- Rotation opens the chicken cage door2 Oct 2025US 2025/0302010 A1Ningbo Xingzhou Intelligent Manufacturing Co., Ltd.
- Solar-Powered Chicken Coop Door2 Oct 2025US 2025/0302011 A1Shenzhen Ruichaoteng Technology Co., Ltd.
- Automatically openable and closable door18 Sep 2025US 2025/0290369 A1US Eiwo Inc
Most cited
By later US patents
- Wire cage116US 6,681,720 B1Doskocil Manufacturing Company, Inc. · 2004
- Cage with reversibly mounted door52US 7,918,188 B1Doskocil Manufacturing Company, Inc. · 2011
- Cage door combination lock-latch48US 5,373,810 A1994
- Automated light-sensitive configurable animal door29US 11,533,891 B12022
- Kennel door apparatus28US 6,691,463 B12004