E02B 11/02
Drainage device- laying apparatus
Official title: Drainage device- laying apparatus, e.g. drainage ploughs
E02B11/02 (Drainage device- laying apparatus) appears on 18 US grants and 22 published applications in this corpus.
Search patents in E02B- Granted patents
- 18
- Published applications
- 22
- Assignees
- 16
- Inventors
- 37
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 2 |
| 2020 | 0 | 1 |
| 2021 | 3 | 1 |
| 2022 | 2 | 3 |
| 2023 | 1 | 1 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Slope reinforcing and protecting device for hydraulic engineering5 May 2026US 12,618,216 B2Anhui Agriculture University
- Apparatus for automatically extruding and forming a finished concrete channel17 Feb 2026US 12,553,203 B2Nano and Advanced Materials Institute Limited
- Segmental method for installing wick drains12 Aug 2025US 12,385,205 B2
- Underground drain tube systems and methods of underground installation of drain tube systems30 Jan 2024US 11,885,088 B2
- Warning device, warning system for detecting water level in drainage well4 Jul 2023US 11,694,537 B2Hon Hai Precision Industry Co., Ltd.
- Segmental method for installing wick drains16 Oct 2025US 2025/0320679 A1Keller North America, Inc.
- Apparatus for automatically extruding and forming a finished concrete channel24 Oct 2024US 2024/0352698 A1Nano and Advanced Materials Institute Limited
- Slope reinforcing and protecting device for hydraulic engineering19 Sep 2024US 2024/0309600 A1Anhui Agricultural University
- Segmental method for installing wick drains7 Dec 2023US 2023/0392335 A1
- Warning device, warning system for detecting water level in drainage well29 Sep 2022US 2022/0309898 A1Hon Hai Precision Industry Co., Ltd.
Most cited
By later US patents
- Portable irrigation pipe installation and removal system7US 6,561,731 B1Golden State Irrigation Services · 2003
- Implements, implement systems, and methods for displacing ground material4US 9,267,255 B2Willmar Fabrication, LLC · 2016
- Golf bunker filtration device and related methods1US 11,389,807 B2Capillary Concrete, LLC · 2022