G05D 7/067
Characterised by free surface flow
Official title: {characterised by free surface flow (open channel water distribution systems E02B13/00)}
G05D7/067 (Characterised by free surface flow) appears on 17 US grants and 13 published applications in this corpus.
Search patents in G05D- Granted patents
- 17
- Published applications
- 13
- Assignees
- 7
- Inventors
- 22
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sweating simulator4 Nov 2025US 12,462,710 B2The Hong Kong Polytechnic University
- Fluid flow control for water treatment systems2 Apr 2024US 11,947,369 B2Aquacycl, Inc.
- Fluid flow control for water treatment systems14 Mar 2023US 11,604,482 B2Aquacycl, Inc.
- Methods, devices, and systems for controlling a valve2 Jun 2020US 10,670,023 B2Schwing America, Inc.
- Automation of water flow in networks14 Jan 2020US 10,534,377 B2Schweitzer Engineering Laboratories, Inc.
- Sweating simulator3 Aug 2023US 2023/0245594 A1The Hong Kong Polytechnic University
- Fluid flow control for water treatment systems29 Jun 2023US 2023/0205236 A1Aquacycl, Inc.
- Fluid flow control for water treatment systems16 Sep 2021US 2021/0286381 A1Aquacycl, Inc.
- Automation of water flow in networks19 Jul 2018US 2018/0203472 A1Schweitzer Engineering Laboratories, Inc.
- Methods, devices, and systems for controlling a valve25 Jan 2018US 2018/0023575 A1Schwing America, Inc.
Most cited
By later US patents
- Control method for open channel20US 4,522,534 AHitachi, Ltd. · 1985
- Control gates13US 7,083,359 B2Rubicon Research Pty Ltd. · 2006
- Purge system12US 5,844,137 AIsco, Inc. · 1998
- Fluid regulation6US 7,152,001 B2Rubicon Research Pty Ltd. · 2006
- Automation of water flow in networks5US 10,534,377 B2Schweitzer Engineering Laboratories, Inc. · 2020