F28D 1/0472
The conduits being helically or spirally coiled
Official title: {the conduits being helically or spirally coiled}
F28D1/0472 (The conduits being helically or spirally coiled) appears on 165 US grants and 209 published applications in this corpus.
Search patents in F28D- Granted patents
- 165
- Published applications
- 209
- Assignees
- 146
- Inventors
- 417
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 4 |
| 2005 | 1 | 4 |
| 2006 | 1 | 3 |
| 2007 | 3 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 5 |
| 2010 | 1 | 6 |
| 2011 | 1 | 6 |
| 2012 | 2 | 10 |
| 2013 | 1 | 3 |
| 2014 | 4 | 13 |
| 2015 | 3 | 12 |
| 2016 | 6 | 15 |
| 2017 | 12 | 12 |
| 2018 | 13 | 10 |
| 2019 | 9 | 16 |
| 2020 | 16 | 16 |
| 2021 | 18 | 18 |
| 2022 | 8 | 22 |
| 2023 | 14 | 9 |
| 2024 | 10 | 6 |
| 2025 | 10 | 5 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thermal management system and method25 Aug 2026US 12,716,656 B2Transportation IP Holdings, LLC
- Tubular membrane heat exchanger12 May 2026US 12,624,897 B2Baltimore Aircoil Company, Inc.
- Subcooler for carbon dioxide distribution systems12 May 2026US 12,624,903 B2Tomco2 Systems Company
- Heat exchanger and energy conversion device assembly including the same14 Apr 2026US 12,603,539 B2
- Accumulator heat exchanger6 Jan 2026US 12,516,859 B2Carrier Corporation
- Heat exchanger24 Sep 2026US 2026/0287266 A1Alleima Engineering GmbH
- Cooling device and water purifier comprising same21 May 2026US 2026/0139897 A1Coway Co., Ltd.
- Heat exchanger coil with tube insert5 Mar 2026US 2026/0063371 A1
- Multi-half pipe heat exchange system for electric arc, metallurgical or refining furnaces and system thereof29 Jan 2026US 2026/0029197 A1Amerifab, Inc.
- Heat transfer system31 Jul 2025US 2025/0244080 A1City St George's, University of London
Most cited
By later US patents
- Heat exchanger29US 4,619,317 AHoechst Aktiengesellschaft · 1986
- Heat exchanger having microchannel tubing and spine fin heat transfer surface29US 5,967,228 AAmerican Standard Inc. · 1999
- Point of use water purification method and apparatus29US 6,830,661 B1Environmental Technology Enterprises, L.L.C. · 2004
- Heat exchanger and fan motor in a front wheel drive vehicle23US 4,510,991 AMitsubishi Denki Kabushiki Kaisha · 1985
- Heat exchanger assembly with integral fin unit22US 4,778,004 APeerless of America, Inc. · 1988