E02B 13/02
Closures for irrigation conduits
E02B13/02 (Closures for irrigation conduits) appears on 85 US grants and 64 published applications in this corpus.
Search patents in E02B- Granted patents
- 85
- Published applications
- 64
- Assignees
- 33
- Inventors
- 135
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 0 | 5 |
| 2005 | 2 | 3 |
| 2006 | 6 | 3 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 2 | 0 |
| 2010 | 2 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 3 |
| 2014 | 2 | 2 |
| 2015 | 1 | 4 |
| 2016 | 1 | 5 |
| 2017 | 4 | 2 |
| 2018 | 3 | 3 |
| 2019 | 5 | 4 |
| 2020 | 5 | 2 |
| 2021 | 5 | 3 |
| 2022 | 0 | 3 |
| 2023 | 1 | 2 |
| 2024 | 4 | 2 |
| 2025 | 3 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Overshot and undershot control gate10 Sep 2024US 12,084,826 B2Rubicon Research Pty Ltd.
- Apparatus, systems and methods for irrigating lands5 Mar 2024US 11,917,955 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Float-controlled gate for steady water flow13 Aug 2026US 2026/0235226 A1
- 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
- Retrofitted flood irrigation valve actuating apparatus3 Jul 2025US 2025/0215991 A1Austin Verissimo
- Water and soil resource comprehensive improvement method for loess hilly and gully region channels23 Jan 2025US 2025/0024773 A1Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group
Most cited
By later US patents
- Rotary sluice gate52US 4,576,512 AAlsthom-Atlantique · 1986
- Penstock32US 4,549,837 A1985
- Panel ditch check for temporary erosion and sediment control19US 5,622,448 APanel Products, Inc. · 1997
- Automated farm turnout19US 6,427,718 B1The United States of America as represented by the Secretary of the Interior · 2002
- Irrigation systems automation16US 3,952,522 A1976