F28G 3/04
Rotary appliances: having brushes
Official title: having brushes (brushes A46B)
F28G3/04 (Rotary appliances: having brushes) appears on 24 US grants and 18 published applications in this corpus.
Search patents in F28G- Granted patents
- 24
- Published applications
- 18
- Assignees
- 14
- Inventors
- 63
- Latest grant
- 12 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 3 | 3 |
| 2019 | 2 | 3 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning apparatus for heat exchanger and polishing apparatus12 Jul 2022US 11,383,345 B2Ebara Corporation
- Plate and shell heat exchanging system having a divided manifold tube17 May 2022US 11,333,451 B2
- Air conditioner1 Jun 2021US 11,022,325 B2Samsung Electronics Co., Ltd.
- Cleaning system with wire brush bundles21 May 2019US 10,295,285 B2King Fahd University of Petroleum and Minerals
- Heat exchanger cleaning system with cable and turbine rotation8 Jan 2019US 10,175,010 B2King Fahd University of Petroleum and Minerals
- Automatic Condenser Cleaner22 Jan 2026US 2026/0022903 A1
- 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
- Condenser Cleaning System18 Feb 2021US 2021/0048260 A1
- Cleaning apparatus for heat exchanger and polishing apparatus1 Oct 2020US 2020/0306920 A1Ebara Corporation
Most cited
By later US patents
- Duct cleaning apparatus37US 5,402,548 A1995
- Waste heat recovery apparatus36US 4,766,952 AFurukawa Electric Co., Ltd. · 1988
- Apparatus for inspecting and repairing a pressurized-water reactor's steam generator heat exchanger tubes33US 3,934,731 ASiemens Aktiengesellschaft · 1976
- Apparatus for cleaning ducting28US 5,819,354 A1998
- Duct cleaning device17US 5,802,667 A1998