F28G 3/00
Rotary appliances
F28G3/00 (Rotary appliances) appears on 200 US grants and 148 published applications in this corpus.
Search patents in F28G- Granted patents
- 200
- Published applications
- 148
- Assignees
- 121
- Inventors
- 354
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 5 | 6 |
| 2005 | 3 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 4 |
| 2009 | 3 | 4 |
| 2010 | 2 | 6 |
| 2011 | 5 | 8 |
| 2012 | 4 | 9 |
| 2013 | 2 | 6 |
| 2014 | 10 | 4 |
| 2015 | 2 | 4 |
| 2016 | 6 | 9 |
| 2017 | 8 | 9 |
| 2018 | 11 | 13 |
| 2019 | 8 | 7 |
| 2020 | 6 | 8 |
| 2021 | 3 | 7 |
| 2022 | 7 | 5 |
| 2023 | 9 | 13 |
| 2024 | 5 | 6 |
| 2025 | 6 | 4 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F28G 3/16Rotary appliances: using jets of fluid for removing debris146
- F28G 3/04Rotary appliances: having brushes24
- F28G 3/10Rotary appliances: having scrapers, hammers, or cutters21
- F28G 3/08Rotary appliances: having coiled wire tools, i.e. basket type10
- F28G 3/02Rotary appliances: having abrasive tools1
- F28G 3/06Rotary appliances: having articulated tools1
Recent patents
- Method for manufacturing water absorbent resin15 Sep 2026US 12,734,560 B2Sumitomo Seika Chemicals Co., Ltd.
- Multi-directional jet cleaning apparatus for steam generator7 Jul 2026US 12,674,634 B2Cgn Power Co., Ltd.
- High pressure nozzle3 Mar 2026US 12,564,855 B2P. Bekkers Holding B.V.
- Cooling unit for cold air generation4 Nov 2025US 12,460,848 B23CON ANLAGENBAU GmbH
- Flexible lance drive apparatus with autostroke function23 Sep 2025US 12,422,203 B2Stoneage, Inc.
- 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.
- Multi-Directional Jet Cleaning Apparatus for Steam Generator14 May 2026US 2026/0132998 A1Cgn Power Co., Ltd.
Most cited
By later US patents
- Economizer with soot blower59US 4,407,237 AApplied Engineering Co. · 1983
- Automated heat exchanger tube cleaning assembly and system59US 8,308,869 B2Aquilex Hydrochem, Inc. · 2012
- Indexing sootblower48US 4,803,959 AThe Babcock & Wilcox Company · 1989
- Cleaning apparatus for tubes and tube bundles41US 4,095,305 AC. H. Heist Corporation · 1978
- Duct cleaning apparatus37US 5,402,548 A1995