Y02A 40/22
Improving land use
Official title: Improving land use; Improving water use or availability; Controlling erosion
Y02A40/22 (Improving land use) appears on 913 US grants and 761 published applications in this corpus.
Search patents in Y02A- Granted patents
- 913
- Published applications
- 761
- Assignees
- 413
- Inventors
- 1,600
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 16 | 0 |
| 1978 | 21 | 0 |
| 1979 | 19 | 0 |
| 1980 | 18 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 10 | 0 |
| 1984 | 14 | 0 |
| 1985 | 12 | 0 |
| 1986 | 13 | 0 |
| 1987 | 14 | 0 |
| 1988 | 15 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 13 | 0 |
| 1992 | 13 | 0 |
| 1993 | 15 | 0 |
| 1994 | 19 | 0 |
| 1995 | 12 | 0 |
| 1996 | 11 | 0 |
| 1997 | 20 | 0 |
| 1998 | 23 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 12 | 2 |
| 2002 | 14 | 20 |
| 2003 | 13 | 11 |
| 2004 | 20 | 26 |
| 2005 | 15 | 22 |
| 2006 | 10 | 24 |
| 2007 | 10 | 21 |
| 2008 | 13 | 17 |
| 2009 | 8 | 25 |
| 2010 | 12 | 24 |
| 2011 | 14 | 30 |
| 2012 | 23 | 29 |
| 2013 | 18 | 16 |
| 2014 | 24 | 28 |
| 2015 | 16 | 28 |
| 2016 | 24 | 54 |
| 2017 | 15 | 30 |
| 2018 | 29 | 39 |
| 2019 | 45 | 47 |
| 2020 | 40 | 42 |
| 2021 | 33 | 49 |
| 2022 | 33 | 52 |
| 2023 | 36 | 47 |
| 2024 | 35 | 40 |
| 2025 | 35 | 26 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for promoting plant health using free enzymes and microorganisms that overexpress enzymes19 May 2026US 12,630,484 B2Spogen Biotech Inc.
- Method for quickly determining position of signal mouthpiece of spraying equipment28 Apr 2026US 12,611,689 B2Jiangsu University
- Moss-covered green manure and application method in assisting ecological remediation14 Apr 2026US 12,600,687 B2Aba Tibetan and Qiang Autonomous Prefecture Ecological Protection and Development Research Institute
- Irrigation control systems and methods10 Mar 2026US 12,568,895 B2Rain Bird Corporation
- Grow space plumbing with variable flow rates10 Mar 2026US 12,568,897 B1Hippo Harvest Inc.
- Methods for promoting plant health using free enzymes and microorganisms that overexpress enzymes30 Jul 2026US 2026/0217621 A1Spogen Biotech Inc.
- Methods for promoting plant health using free enzymes and microorganisms that overexpress enzymes30 Jul 2026US 2026/0217622 A1Spogen Biotech Inc.
- Technique for afforestation by aerial seeding of pelleted plant seed under normal precipitation conditions16 Jul 2026US 2026/0198404 A1Sinoway Forest Technology Co., Ltd
- Irrigation Control Systems and Methods9 Jul 2026US 2026/0191156 A1Rain Bird Corporation
- Efficient Grow Space Irrigation9 Jul 2026US 2026/0191159 A1Hippo Harvest Inc.
Most cited
By later US patents
- Closed loop control system, sensing apparatus and fluid application system for a precision irrigation device262US 5,927,603 AJ. R. Simplot Company · 1999
- Evapotranspiration remote irrigation control system205US 5,870,302 AWaterlink Systems, Inc. · 1999
- Interactive irrigation control system192US 4,176,395 AClemar Manufacturing Corporation · 1979
- Method and apparatus for variable application of irrigation water and chemicals192US 5,246,164 A1993
- Irrigation method and control system180US 5,097,861 AHunter Industries, Inc. · 1992