E02B 13/00
Irrigation ditches, i.e. gravity flow, open channel water distribution systems
Official title: Irrigation ditches, i.e. gravity flow, open channel water distribution systems ({retaining waterborne material in irrigation canals E02B5/085}; other distribution systems for watering or spraying gardens, fields, sports grounds, or the like, A01G25/00; {built-in irrigation means for sports grounds E01C13/083})
E02B13/00 (Irrigation ditches, i.e. gravity flow, open channel water distribution systems) appears on 215 US grants and 116 published applications in this corpus.
Search patents in E02B- Granted patents
- 215
- Published applications
- 116
- Assignees
- 89
- Inventors
- 340
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 4 |
| 2003 | 4 | 4 |
| 2004 | 2 | 7 |
| 2005 | 3 | 4 |
| 2006 | 7 | 4 |
| 2007 | 3 | 3 |
| 2008 | 2 | 1 |
| 2009 | 3 | 1 |
| 2010 | 2 | 4 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 0 | 4 |
| 2014 | 5 | 6 |
| 2015 | 5 | 7 |
| 2016 | 6 | 11 |
| 2017 | 7 | 7 |
| 2018 | 8 | 6 |
| 2019 | 11 | 11 |
| 2020 | 8 | 3 |
| 2021 | 9 | 6 |
| 2022 | 3 | 7 |
| 2023 | 2 | 3 |
| 2024 | 7 | 2 |
| 2025 | 4 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Retrofitted flood irrigation valve actuating apparatus1 Jul 2025US 12,345,349 B2
- Apparatus, systems and methods for irrigating lands20 May 2025US 12,302,803 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Retrofitted flood irrigation valve actuating apparatus15 Apr 2025US 12,276,350 B2
- Dredging and drainage structure for irrigation area11 Feb 2025US 12,221,756 B1Zhejiang Institute of Hydraulics & Estuary (Zhejiang Institute of Marine Planning and Design)
- Overshot and undershot control gate10 Sep 2024US 12,084,826 B2Rubicon Research Pty Ltd.
- Float-controlled gate for steady water flow13 Aug 2026US 2026/0235226 A1
- Stormwater handling system with adjustable weir assembly16 Jul 2026US 2026/0201663 A1Contech Engineered Solutions LLC
- Comprehensive treatment method for salinized soil in semi-arid region30 Oct 2025US 2025/0332625 A1Institute of Land Engineering & Technology,Shaanxi Provincial Land Engineering Construction Group C
- Retrofitted flood irrigation valve actuating apparatus18 Sep 2025US 2025/0290573 A1Austin Verissimo
- A water-level control unit with a downwardly hanging hinged lower flap portion of a valve element and a floating body connected thereto21 Aug 2025US 2025/0263917 A1
Most cited
By later US patents
- Irrigation controller98US 4,937,732 AJames Hardie Irrigation, Inc. · 1990
- Automatic irrigation water conservation controller96US 4,922,433 A1990
- Permeable flexible plastic tubing81US 3,939,875 ABoyle and Osborn · 1976
- Leaching system conduit with interlocking end joint57US 5,336,017 AInfiltrator Systems, Inc. · 1994
- Underground irrigation system55US 3,946,762 A1976