F05B 2220/20
Within closed fluid conduits
Official title: within closed fluid conduits, e.g. pipes
F05B2220/20 (Within closed fluid conduits) appears on 141 US grants and 197 published applications in this corpus.
Search patents in F05B- Granted patents
- 141
- Published applications
- 197
- Assignees
- 101
- Inventors
- 360
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 5 |
| 2009 | 2 | 3 |
| 2010 | 3 | 4 |
| 2011 | 1 | 12 |
| 2012 | 0 | 10 |
| 2013 | 2 | 8 |
| 2014 | 1 | 11 |
| 2015 | 7 | 11 |
| 2016 | 8 | 13 |
| 2017 | 12 | 5 |
| 2018 | 9 | 10 |
| 2019 | 11 | 15 |
| 2020 | 9 | 18 |
| 2021 | 12 | 12 |
| 2022 | 8 | 24 |
| 2023 | 9 | 6 |
| 2024 | 15 | 11 |
| 2025 | 14 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydropower recycle system13 Jan 2026US 12,523,194 B2Green Vigor Limited
- Method and system for power generation11 Nov 2025US 12,467,340 B2Cameron Internation Corporation
- Self-powered irrigation systems, generator systems and methods of controlling irrigation4 Nov 2025US 12,463,503 B2Rain Bird Corporation
- Compression recovery device for delivering electricity in pipeline systems7 Oct 2025US 12,435,691 B2
- Actuating device23 Sep 2025US 12,421,932 B1
- Shaft-type power generation device based on vertical temperature difference of mountain body and solar heat collection1 Oct 2026US 2026/0298214 A1
- Ffwn clean energy power plant9 Jul 2026US 2026/0194035 A1
- Tangential fluid turbine2 Jul 2026US 2026/0185502 A1
- Self-powered irrigation systems, generator systems and methods of controlling irrigation26 Feb 2026US 2026/0058526 A1Rain Bird Corporation
- Tubular turbine systems and methods14 Aug 2025US 2025/0257712 A1Alternative Sustainability IP LLC
Most cited
By later US patents
- Ultrasonic flow-control system103US 4,520,516 A1985
- System for generation of electrical power90US 4,352,025 A1982
- Shower accessory75US 5,140,254 A1992
- Wellbore power generating system for downhole operation65US 6,848,503 B2Halliburton Energy Services.Inc. · 2005
- Ultrasonic motion detection system59US 4,604,735 ARecurrent Solutions, Inc. · 1986