E02B 8/00
Details of barrages or weirs
Official title: Details of barrages or weirs (cleaning or keeping clear the surface of open water E02B15/00 ){; Energy dissipating devices carried by lock or dry-dock gates}
E02B8/00 (Details of barrages or weirs) appears on 395 US grants and 331 published applications in this corpus.
Search patents in E02B- Granted patents
- 395
- Published applications
- 331
- Assignees
- 213
- Inventors
- 839
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 11 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 0 |
| 2002 | 8 | 4 |
| 2003 | 5 | 14 |
| 2004 | 6 | 13 |
| 2005 | 9 | 14 |
| 2006 | 6 | 8 |
| 2007 | 9 | 15 |
| 2008 | 6 | 8 |
| 2009 | 6 | 8 |
| 2010 | 6 | 5 |
| 2011 | 8 | 13 |
| 2012 | 6 | 7 |
| 2013 | 8 | 10 |
| 2014 | 3 | 17 |
| 2015 | 13 | 20 |
| 2016 | 16 | 22 |
| 2017 | 20 | 17 |
| 2018 | 18 | 20 |
| 2019 | 20 | 23 |
| 2020 | 23 | 18 |
| 2021 | 13 | 7 |
| 2022 | 6 | 12 |
| 2023 | 15 | 17 |
| 2024 | 10 | 22 |
| 2025 | 12 | 10 |
| 2026 | 12 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Step-by-step paired and up-down reciprocating combined fishway and fish passage method18 Aug 2026US 12,709,852 B2Anhui University of Science and Technology
- Sluice gate16 Jun 2026US 12,655,910 B2
- Method, system and apparatus for asymmetric flow guidance of fish26 May 2026US 12,637,821 B2
- Precast dam structure with flowpath19 May 2026US 12,630,990 B2W.L. French Hydropower Holdings LLC
- Method for regulating confluence of tributaries with large drop difference and large angle into trunk canal12 May 2026US 12,624,509 B2Chongqing Jiaotong University
- Flood barrier wall using double airbag and construction method therefor13 Aug 2026US 2026/0234883 A1Daedo Entech Co., Ltd.
- Screening device, method for detecting a sag of an endless drive element, and use of a position sensor16 Jul 2026US 2026/0199812 A1Huber SE
- Auxiliary Facilities and Method for Fish Resource Recovery in Open Water Diversion Channel7 May 2026US 2026/0125869 A1China Institute of Water Resources and Hydropower Research
- Prefabricated vertical geotextile ditch check system30 Apr 2026US 2026/0117483 A1
- Taiji fishway structure23 Apr 2026US 2026/0110150 A1Changsha Hetong Ecological Environment Technology Co., Ltd
Most cited
By later US patents
- Self-regulating tide gate49US 3,974,654 AW. S. Rockwell Company · 1976
- Pneumatic spar sediment control curtain42US 4,484,836 A1984
- Method and apparatus for migratory fish passage to the sea38US 5,161,913 A1992
- Method and apparatus for diversion of downstream migrating anadromous fish37US 4,437,431 A1984
- Integrated fish migration system34US 4,260,286 A1981