F28G 1/166
From external surfaces of heat exchange conduits
Official title: {from external surfaces of heat exchange conduits}
F28G1/166 (From external surfaces of heat exchange conduits) appears on 129 US grants and 132 published applications in this corpus.
Search patents in F28G- Granted patents
- 129
- Published applications
- 132
- Assignees
- 91
- Inventors
- 288
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 4 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 2 | 4 |
| 2010 | 1 | 3 |
| 2011 | 1 | 7 |
| 2012 | 2 | 8 |
| 2013 | 3 | 7 |
| 2014 | 2 | 7 |
| 2015 | 2 | 6 |
| 2016 | 7 | 5 |
| 2017 | 7 | 11 |
| 2018 | 8 | 7 |
| 2019 | 5 | 8 |
| 2020 | 6 | 8 |
| 2021 | 7 | 5 |
| 2022 | 10 | 10 |
| 2023 | 6 | 8 |
| 2024 | 6 | 5 |
| 2025 | 6 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Clothes care apparatus and method for controlling the same29 Sep 2026US 12,747,529 B2Samsung Electronics Co., Ltd.
- Tractor radiator cleaning arrangement29 Sep 2026US 12,747,919 B2
- Method for manufacturing water absorbent resin15 Sep 2026US 12,734,560 B2Sumitomo Seika Chemicals Co., Ltd.
- Systems, methods and devices for cooling tower maintenance and repair4 Aug 2026US 12,698,941 B2
- Apparatus and methods for self-cleaning and maintaining HVAC heat transfer coils6 Jan 2026US 12,516,895 B2Blue Box Air, LLC
- Economizers for waste heat recovery systems27 Aug 2026US 2026/0251406 A1Scope Technology and Manufacturing, LLC
- Fin Fan Cleaning Device and Method9 Jul 2026US 2026/0194319 A1Precision Iceblast Corporation
- Apparatus and method for cleaning a plate heat exchanger28 May 2026US 2026/0146811 A1Viking CIP Ltd.
- Cleaner apparatus29 Jan 2026US 2026/0027599 A1Iflo LLC
- Tractor Radiator Cleaning Arrangement28 Aug 2025US 2025/0271225 A1
Most cited
By later US patents
- Water cannon apparatus and method for cleaning a tube bundle heat exchanger, boiler, condenser, or the like49US 4,773,357 AAnco Engineers, Inc. · 1988
- Steam generator sludge lancing method42US 4,276,856 AWestinghouse Electric Corp. · 1981
- Flexible lance and drive system37US 5,036,871 AElectric Power Research Institute, Inc. · 1991
- Waste heat recovery apparatus36US 4,766,952 AFurukawa Electric Co., Ltd. · 1988
- Automated sludge lance35US 5,570,660 AThe Babcock & Wilcox Company · 1996