F28G 1/12
Fluid-propelled scrapers, bullets, or like solid bodies
F28G1/12 (Fluid-propelled scrapers, bullets, or like solid bodies) appears on 222 US grants and 88 published applications in this corpus.
Search patents in F28G- Granted patents
- 222
- Published applications
- 88
- Assignees
- 123
- Inventors
- 326
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 14 | 0 |
| 1984 | 7 | 0 |
| 1985 | 17 | 0 |
| 1986 | 14 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 1 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 4 |
| 2003 | 3 | 0 |
| 2004 | 0 | 3 |
| 2005 | 2 | 3 |
| 2006 | 2 | 2 |
| 2007 | 0 | 2 |
| 2008 | 2 | 4 |
| 2009 | 2 | 3 |
| 2010 | 2 | 4 |
| 2011 | 6 | 4 |
| 2012 | 2 | 2 |
| 2013 | 1 | 5 |
| 2014 | 4 | 3 |
| 2015 | 5 | 2 |
| 2016 | 1 | 9 |
| 2017 | 2 | 4 |
| 2018 | 5 | 5 |
| 2019 | 5 | 7 |
| 2020 | 5 | 1 |
| 2021 | 3 | 6 |
| 2022 | 4 | 6 |
| 2023 | 3 | 2 |
| 2024 | 5 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for improving steam oxidation resistance of small diameter boiler tube in coal-fired boiler3 Feb 2026US 12,540,729 B2Xi'an Thermal Power Research Institute Co., Ltd.
- Apparatus for tracking a pig18 Nov 2025US 12,474,009 B2Cokebusters Ltd.
- End cover structure and water chiller29 Apr 2025US 12,287,162 B2Chongqing Midea General Refrigeration Equipment Co., Ltd.
- Systems and methods for belt-fed tube cleaning25 Jun 2024US 12,017,260 B2Crossford International, LLC
- Cleaning ball and method for manufacturing same21 May 2024US 11,988,472 B2Mizuki Co., Ltd.
- Separation of cleaning bodies from a stream of fluid30 Jul 2026US 2026/0219000 A1Taprogge GmbH
- Fin Fan Cleaning Device and Method9 Jul 2026US 2026/0194319 A1Precision Iceblast Corporation
- Method and apparatus for improving steam oxidation resistance of small diameter boiler tube in coal-fired boiler20 Mar 2025US 2025/0093022 A1Xi'an Thermal Power Research Institute Co., Ltd.
- A process and system for automated online fouling prevention of vertical shell and tube gas-to-gas heat exchangers18 Apr 2024US 2024/0125568 A1OMNI Conversion Technologies Inc.
- An apparatus for tracking a pig29 Feb 2024US 2024/0068614 A1Cokebusters Ltd.
Most cited
By later US patents
- Method of monitoring condenser performance and system therefor86US 4,390,058 AHitachi, Ltd. · 1983
- Pipeline pig59US 6,500,271 B12002
- Condenser tube cleaning plug44US 3,939,519 A1976
- In-situ removal of oily deposits from the interior surfaces of conduits43US 4,579,596 AUnion Carbide Corporation · 1986
- Apparatus for cleaning heat exchanger tubes43US 4,583,586 AEbara Corporation · 1986