F28G 9/00
Cleaning by flushing or washing
Official title: Cleaning by flushing or washing, e.g. with chemical solvents (appliances using jets of fluid for removing debris F28G1/16, F28G3/16)
F28G9/00 (Cleaning by flushing or washing) appears on 397 US grants and 331 published applications in this corpus.
Search patents in F28G- Granted patents
- 397
- Published applications
- 331
- Assignees
- 279
- Inventors
- 838
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 3 |
| 2002 | 5 | 6 |
| 2003 | 7 | 8 |
| 2004 | 6 | 5 |
| 2005 | 5 | 13 |
| 2006 | 7 | 7 |
| 2007 | 2 | 6 |
| 2008 | 4 | 8 |
| 2009 | 5 | 15 |
| 2010 | 4 | 15 |
| 2011 | 5 | 15 |
| 2012 | 12 | 9 |
| 2013 | 6 | 12 |
| 2014 | 8 | 13 |
| 2015 | 8 | 17 |
| 2016 | 21 | 16 |
| 2017 | 15 | 18 |
| 2018 | 16 | 24 |
| 2019 | 15 | 14 |
| 2020 | 15 | 18 |
| 2021 | 12 | 19 |
| 2022 | 24 | 18 |
| 2023 | 16 | 22 |
| 2024 | 15 | 10 |
| 2025 | 17 | 10 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method, system and apparatus for hydrocarbon flow system fluid cooling4 Aug 2026US 12,698,942 B2Empig AS
- Cooling system for a marine vessel21 Jul 2026US 12,686,483 B1Brunswick Corporation
- Industrial cleaning systems, including solutions for removing various types of deposits, and cognitive cleaning16 Jun 2026US 12,656,070 B2Angara Global Ltd.
- Method of chemically cleaning pipework systems12 May 2026US 12,624,459 B2
- Continuous dryer heat exchanger device3 Mar 2026US 12,566,028 B2STELA Laxhuber GmbH
- Heat transfer system24 Sep 2026US 2026/0287285 A1Bradford White Corporation
- Method of operating a lance cleaning machine using multiple modes20 Aug 2026US 2026/0243525 A1Stoneage, Inc.
- Method and apparatus for determining relative locations of tubes in a heat exchanger bundle20 Aug 2026US 2026/0243526 A1Stoneage, Inc.
- Method and apparatus for compensating for machine-mounting orientation20 Aug 2026US 2026/0243527 A1Stoneage, Inc.
- Method and apparatus for conserving movement in a bundle-cleaning assembly20 Aug 2026US 2026/0243528 A1Stoneage, Inc.
Most cited
By later US patents
- Methods of simultaneously cleaning and disinfecting industrial water systems66US 6,840,251 B2Nalco Company · 2005
- Heat isolated catalytic reactor56US 5,488,826 ADry Systems Technologies · 1996
- Method for removing scale from metallic substrates50US 3,996,062 AHalliburton Company · 1976
- Water cannon apparatus and method for cleaning a tube bundle heat exchanger, boiler, condenser, or the like49US 4,773,357 AAnco Engineers, Inc. · 1988
- Method and apparatus for treatment of internal surfaces in a closed-loop fluid system46US 6,423,152 B1Intel Sampling AS · 2002