F28G 3/10
Rotary appliances: having scrapers, hammers, or cutters
Official title: having scrapers, hammers, or cutters, e.g. rigidly mounted
F28G3/10 (Rotary appliances: having scrapers, hammers, or cutters) appears on 21 US grants and 15 published applications in this corpus.
Search patents in F28G- Granted patents
- 21
- Published applications
- 15
- Assignees
- 17
- Inventors
- 52
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cooling unit for cold air generation4 Nov 2025US 12,460,848 B23CON ANLAGENBAU GmbH
- Corrosion-resistant air preheater capable of slowing down dust deposit28 Nov 2023US 11,828,300 B2Huaneng Qufu Thermal Power Co., Ltd.
- Gas conditioning process and system for extracting a condensable vapour from a supplied gas21 May 2019US 10,294,433 B2Sage & Time LLP
- Pipe and tubes cleaning mechanism24 May 2016US 9,346,085 B2
- Treatment of fluorocarbon feedstocks28 Sep 2004US 6,797,913 B2The South African Nuclear Energy Corporation Limited
- Heat exchanger1 Aug 2024US 2024/0252950 A1Nippon Shokubai Co., Ltd.
- Cooling unit for cold air generation2 Nov 2023US 2023/0349607 A13CON ANLAGENBAU GmbH
- Water pipe scale removal device30 Mar 2023US 2023/0098654 A1
- Corrosion-resistant air preheater capable of slowing down dust deposit23 Mar 2023US 2023/0092701 A1Jining Huayuan Thermal Power Co., Ltd.
- Descaling and cleaning equipment for condenser of the power plant26 Mar 2020US 2020/0096266 A1
Most cited
By later US patents
- Cleaning apparatus for tubes and tube bundles41US 4,095,305 AC. H. Heist Corporation · 1978
- Scraper for a vessel interior surface28US 4,095,307 ALox Equipment Company · 1978
- Scale removal device24US 4,081,875 A1978
- Apparatus for cleaning well tubular members24US 6,173,771 B1Schlumberger Technology Corporation · 2001
- Gas conditioning process and system for extracting a condensable vapour from a supplied gas23US 10,294,433 B2Sage & Time LLP · 2019