F28F 1/06
Crimped or corrugated in cross-section
Official title: crimped or corrugated in cross-section
F28F1/06 (Crimped or corrugated in cross-section) appears on 134 US grants and 170 published applications in this corpus.
Search patents in F28F- Granted patents
- 134
- Published applications
- 170
- Assignees
- 111
- Inventors
- 430
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 7 |
| 2007 | 1 | 4 |
| 2008 | 0 | 4 |
| 2009 | 1 | 9 |
| 2010 | 0 | 6 |
| 2011 | 2 | 4 |
| 2012 | 1 | 4 |
| 2013 | 3 | 8 |
| 2014 | 3 | 5 |
| 2015 | 3 | 6 |
| 2016 | 3 | 5 |
| 2017 | 7 | 12 |
| 2018 | 6 | 11 |
| 2019 | 13 | 11 |
| 2020 | 6 | 13 |
| 2021 | 12 | 17 |
| 2022 | 8 | 12 |
| 2023 | 12 | 8 |
| 2024 | 4 | 9 |
| 2025 | 5 | 5 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Condensation dedust-demister set6 Oct 2026US 12,752,224 B2
- Evaporator with orifice insert25 Aug 2026US 12,716,660 B2Hamilton Sundstrand Corporation
- Double-tube heat exchanger and manufacturing method therefor26 May 2026US 12,638,241 B2Sumitomo Riko Company Limited
- Long-life aluminum alloy with a high corrosion resistance and helically grooved tube produced from the alloy24 Mar 2026US 12,584,197 B2Hydro Precision Tubing (Suzhou) Co., Ltd
- Double tube for heat-exchange6 May 2025US 12,292,239 B2ContiTech Fluid Korea Ltd.
- Heat exchanger tube25 Jun 2026US 2026/0177333 A1Wieland-Werke AG
- Heat recovery system26 Feb 2026US 2026/0055973 A1Zypho, SA
- Shell and tube heat exchanger with flexible diaphragm12 Feb 2026US 2026/0042332 A1Transportation IP Holdings, LLC
- Heat pipe and heat sink1 Jan 2026US 2026/0002738 A1Furukawa Electric Co., Ltd.
- Boiler, in particular a condensing boiler, comprising a heat exchanger27 Nov 2025US 2025/0362056 A1RIELLO S.p.A.
Most cited
By later US patents
- Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit119US 4,065,264 AShiley Laboratories, Inc. · 1977
- Method of joining fluted tube joint72US 5,554,244 AReynolds Metals Company · 1996
- Two stage thermostatically controlled electric water heating tank55US 5,293,446 A1994
- Dimpled heat exchange tube51US 5,839,505 AAAON, Inc. · 1998
- Method of pointing and corrugating heat exchange tubing49US 5,311,661 APackless Metal Hose, Inc. · 1994