A01G 31/02
Special apparatus therefor
Official title: Special apparatus therefor (self-acting watering devices A01G27/00)
A01G31/02 (Special apparatus therefor) appears on 1,501 US grants and 2,259 published applications in this corpus.
Search patents in A01G- Granted patents
- 1,501
- Published applications
- 2,259
- Assignees
- 958
- Inventors
- 3,365
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 18 | 0 |
| 1978 | 14 | 0 |
| 1979 | 14 | 0 |
| 1980 | 11 | 0 |
| 1981 | 15 | 0 |
| 1982 | 12 | 0 |
| 1983 | 10 | 0 |
| 1984 | 11 | 0 |
| 1985 | 12 | 0 |
| 1986 | 10 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 14 | 0 |
| 1991 | 16 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 13 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 12 | 4 |
| 2002 | 9 | 5 |
| 2003 | 10 | 15 |
| 2004 | 5 | 11 |
| 2005 | 9 | 25 |
| 2006 | 9 | 21 |
| 2007 | 7 | 13 |
| 2008 | 6 | 21 |
| 2009 | 10 | 23 |
| 2010 | 12 | 18 |
| 2011 | 9 | 32 |
| 2012 | 17 | 38 |
| 2013 | 23 | 38 |
| 2014 | 26 | 69 |
| 2015 | 22 | 81 |
| 2016 | 37 | 117 |
| 2017 | 50 | 127 |
| 2018 | 68 | 205 |
| 2019 | 77 | 192 |
| 2020 | 124 | 196 |
| 2021 | 123 | 205 |
| 2022 | 116 | 209 |
| 2023 | 107 | 201 |
| 2024 | 127 | 168 |
| 2025 | 124 | 148 |
| 2026 | 81 | 77 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A01G 31/06Hydroponic culture on racks or in stacked containers588
- A01G 31/04Hydroponic culture on conveyors317
- A01G 31/065With means for recycling the nutritive solution205
- A01G 31/023Hydroponic cultivation wherein the roots of the plants are partially exposed to15
- A01G 31/025Hydroponic cultivation for vertical cultivation7
- A01G 31/024Hydroponic cultivation wherein the roots are totally immersed in the nutritive solution4
- A01G 31/021Hydroponic cultivation combined with culture of aquatic animals in a symbiotic environment2
- A01G 31/022Growth chambers for large-scale hydroponic cultivation, mountable or transportable on site0
Recent patents
- Systems and methods for coupling a plurality of carts in a grow tower system6 Oct 2026US 12,751,387 B2Tavaci Technologies LLC
- Plant cultivation apparatus6 Oct 2026US 12,751,388 B2LG Electronics Inc.
- High density grow space automation with mobile robots29 Sep 2026US 12,745,721 B2Hippo Harvest Inc.
- Modular systems and methods for propagating plants in hydroponic and aquaponic environments22 Sep 2026US 12,740,519 B2
- Plant cultivator15 Sep 2026US 12,733,593 B2LG Electronics Inc.
- A stackable growth module8 Oct 2026US 2026/0305547 A1Autostore Technology AS
- Automated hydroponics system1 Oct 2026US 2026/0293815 A1
- Mushroom and plant cultivation system with spore-filtered gas exchange24 Sep 2026US 2026/0283088 A1
- Enclosed high-density farming environment and system17 Sep 2026US 2026/0271845 A1Heliponix, LLC
- Center mast growing stand for indoor horticulture17 Sep 2026US 2026/0271846 A1Les Verts Living Inc.
Most cited
By later US patents
- Hydroculture crop production system125US 5,121,708 A1992
- Plant growing system108US 5,675,932 A1997
- Apparatus and method for plant growth in aeroponic conditions94US 4,332,105 AADI-Aeroponics Growth Ltd. · 1982
- Controlled environment agriculture facility and method for its operation86US 4,163,342 AGeneral Electric Company · 1979
- Apparatus for producing plants84US 4,028,847 AGeneral Mills, Inc. · 1977