A01G 31/00
Soilless cultivation
Official title: Soilless cultivation, e.g. hydroponics (growth substrates therefor A01G24/00; cultivation of seaweed A01G33/00)
A01G31/00 (Soilless cultivation) appears on 1,654 US grants and 2,475 published applications in this corpus.
Search patents in A01G- Granted patents
- 1,654
- Published applications
- 2,475
- Assignees
- 1,078
- Inventors
- 3,778
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 21 | 0 |
| 1978 | 15 | 0 |
| 1979 | 16 | 0 |
| 1980 | 14 | 0 |
| 1981 | 16 | 0 |
| 1982 | 14 | 0 |
| 1983 | 11 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 18 | 0 |
| 1991 | 18 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 5 | 0 |
| 1999 | 19 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 4 |
| 2002 | 10 | 8 |
| 2003 | 12 | 20 |
| 2004 | 5 | 16 |
| 2005 | 9 | 28 |
| 2006 | 10 | 24 |
| 2007 | 8 | 18 |
| 2008 | 8 | 23 |
| 2009 | 11 | 28 |
| 2010 | 12 | 24 |
| 2011 | 10 | 45 |
| 2012 | 24 | 46 |
| 2013 | 24 | 43 |
| 2014 | 32 | 79 |
| 2015 | 25 | 99 |
| 2016 | 41 | 124 |
| 2017 | 57 | 142 |
| 2018 | 76 | 215 |
| 2019 | 86 | 204 |
| 2020 | 130 | 212 |
| 2021 | 128 | 212 |
| 2022 | 126 | 224 |
| 2023 | 115 | 216 |
| 2024 | 138 | 179 |
| 2025 | 131 | 158 |
| 2026 | 86 | 84 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Silica-based nanoparticles for PFAS remediation6 Oct 2026US 12,752,323 B2Regents of the University of Minnesota
- 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
- 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
- Hydrogel substrate as a platform for biological material17 Sep 2026US 2026/0271841 A1Veritas Substrates, LLC
- Enclosed high-density farming environment and system17 Sep 2026US 2026/0271845 A1Heliponix, LLC
Most cited
By later US patents
- Apparatus and method for controlling a system, such as nutrient control system for feeding plants, based on actual and projected data and according to predefined rules159US 4,992,942 ABahm, Inc. · 1991
- Hydroculture crop production system125US 5,121,708 A1992
- Buoyant contact surfaces in waste treatment pond109US 4,169,050 ASolar Aquasystems, Inc. · 1979
- Plant growing system108US 5,675,932 A1997
- Apparatus and method for plant growth in aeroponic conditions94US 4,332,105 AADI-Aeroponics Growth Ltd. · 1982