F28G 3/166
From external surfaces of heat exchange conduits
Official title: {from external surfaces of heat exchange conduits}
F28G3/166 (From external surfaces of heat exchange conduits) appears on 57 US grants and 49 published applications in this corpus.
Search patents in F28G- Granted patents
- 57
- Published applications
- 49
- Assignees
- 34
- Inventors
- 90
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 2 | 6 |
| 2012 | 1 | 4 |
| 2013 | 1 | 2 |
| 2014 | 7 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 4 |
| 2018 | 5 | 2 |
| 2019 | 2 | 3 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cleaning system and method1 Jul 2025US 12,345,484 B2Dos Viejos Amigos, LLC
- System and module for automatically washing and sterilizing heat exchanger of system air conditioner8 Apr 2025US 12,270,614 B2
- Tube cleaning system and method9 Jul 2024US 12,031,782 B2Tube Tech Industrial Ltd.
- Cleaning system and method12 Dec 2023US 11,841,198 B2Dos Viejos Amigos, LLC
- Soot blower and method of cleaning tubular heat exchanger by using the same1 Mar 2022US 11,262,146 B2Geesco Co., Ltd.
- Sludge lance for cleaning a steam generator7 Aug 2025US 2025/0251202 A1Westinghouse Electric Corp.
- Cleaning system and method7 Mar 2024US 2024/0077262 A1Dos Viejos Amigos, LLC
- Method for cleaning the heat exchange tubes of steam generators in a nuclear power station25 Jan 2024US 2024/0027150 A1Atomenergoremont Joint-Stock Company
- Device for cleaning heat exchange tubes of a steam generator of a nuclear power plant12 Oct 2023US 2023/0324135 A1Atomenergoremont Joint-Stock Company
- Method for diagnosing the technical condition of rotating equipment24 Aug 2023US 2023/0266160 A1Joint Stock Company “Rosenergoatom”
Most cited
By later US patents
- Indexing sootblower48US 4,803,959 AThe Babcock & Wilcox Company · 1989
- Sootblower apparatus27US 4,492,187 AThe Babcock & Wilcox Company · 1985
- Method and apparatus for removing deposits from highly heated surfaces24US 4,503,811 AThe Babcock & Wilcox Company · 1985
- Coil cleansing assembly24US 5,279,357 AKing Company · 1994
- Multi-media rotating sootblower and automatic industrial boiler cleaning system24US 6,892,679 B2Clyde Bergemann GmbH · 2005