F28F 9/0138
Formed by sleeves for finned tubes
Official title: {formed by sleeves for finned tubes}
F28F9/0138 (Formed by sleeves for finned tubes) appears on 25 US grants and 19 published applications in this corpus.
Search patents in F28F- Granted patents
- 25
- Published applications
- 19
- Assignees
- 24
- Inventors
- 77
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 2 | 4 |
| 2021 | 3 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Clip for tube element21 Jan 2025US 12,203,713 B2T. Rad Co., Ltd.
- Connection tube support of waste heat recovery boiler and waste heat recovery boiler including same29 Oct 2024US 12,130,010 B2Doosanenerbility Co., Ltd.
- Heat exchanger and heat exchanger manufacturing method26 Mar 2024US 11,940,219 B2LG Electronics Inc.
- Tube stay installation assembly19 Sep 2023US 11,761,708 B2L & M Radiator, Inc.
- Support assembly for finned tube type heat exchangers23 May 2023US 11,656,037 B2Caterpillar Inc.
- Connection tube support of waste heat recovery boiler and waste heat recovery boiler including same30 May 2024US 2024/0175572 A1Doosan Enerbility Co., Ltd.
- Clip for tube element3 Aug 2023US 2023/0243604 A1T. Rad Co., Ltd.
- Tube Stay Installation Assembly9 Jun 2022US 2022/0178618 A1L & M Radiator, Inc.
- Heat exchanger and heat exchanger manufacturing method21 Apr 2022US 2022/0120501 A1LG Electronics Inc.
- Tube Stay Installation Assembly30 Dec 2021US 2021/0404746 A1L & M Radiator, Inc.
Most cited
By later US patents
- Waste heat recovery apparatus36US 4,766,952 AFurukawa Electric Co., Ltd. · 1988
- Modular exhaust gas steam generator with common boiler casing27US 4,685,426 AThe Babcock & Wilcox Company · 1987
- Exhaust cooling system for internal combustion engine25US 4,685,292 AZwick Energy Research Organization, Inc. · 1987
- Spacer for removable heat exchanger tubes12US 4,216,824 AL & M Radiator, Inc. · 1980
- Support for heat exchanger tubes10US 4,570,704 AL & M Radiator, Inc. · 1986