F28G 15/08
Locating position of cleaning appliances within conduits
F28G15/08 (Locating position of cleaning appliances within conduits) appears on 58 US grants and 66 published applications in this corpus.
Search patents in F28G- Granted patents
- 58
- Published applications
- 66
- Assignees
- 36
- Inventors
- 117
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 3 |
| 2017 | 3 | 4 |
| 2018 | 6 | 6 |
| 2019 | 3 | 5 |
| 2020 | 5 | 8 |
| 2021 | 3 | 6 |
| 2022 | 8 | 7 |
| 2023 | 8 | 5 |
| 2024 | 5 | 3 |
| 2025 | 6 | 5 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Indexer, indexer retrofit kit and method of use thereof14 Oct 2025US 12,443,206 B2Stoneage, Inc.
- Cleaning system, a plate heat exchanger and a method for cleaning the plate channels in a plate heat exchanger26 Aug 2025US 12,398,965 B2FoulingCure ApS
- Apparatus and method of removing foreign substances from steam generator1 Jul 2025US 12,345,412 B2Doosan Enerbility Co., Ltd.
- Auto-indexing lance positioner apparatus and system5 Feb 2026US 2026/0034569 A1Stoneage, Inc.
- Automated shell and tube heat exchanger cleaner1 Jan 2026US 2026/0002744 A1Intel Corporation
- Handheld Brush Positioner with Retraction Stop Sensing27 Nov 2025US 2025/0359658 A1Crossford International, LLC
- Indexer and method of use thereof2 Oct 2025US 2025/0306613 A1Stoneage, Inc.
- Sludge lance for cleaning a steam generator7 Aug 2025US 2025/0251202 A1Westinghouse Electric Corp.
Most cited
By later US patents
- Heat exchanger exchange-tube cleaning lance positioning system62US 6,681,839 B12004
- Automated heat exchanger tube cleaning assembly and system59US 8,308,869 B2Aquilex Hydrochem, Inc. · 2012
- Automated heat exchanger tube cleaning assembly and system36US 8,057,607 B2Aquilex Hydrochem, Inc. · 2011
- Automated heat exchanger tube cleaning assembly and system23US 8,524,011 B2Aquilex Hydrochem, Inc. · 2013
- Apparatus for cleaning radioactive tube banks21US 4,691,723 AErnst Schmutz GmbH · 1987