F28D 7/04
The conduits being spirally coiled
Official title: the conduits being spirally coiled (F28D7/10 takes precedence){(F28D7/0016 and F28D7/0033 take precedence)}
F28D7/04 (The conduits being spirally coiled) appears on 129 US grants and 124 published applications in this corpus.
Search patents in F28D- Granted patents
- 129
- Published applications
- 124
- Assignees
- 115
- Inventors
- 365
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 5 |
| 2003 | 4 | 6 |
| 2004 | 2 | 0 |
| 2005 | 4 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 0 | 7 |
| 2011 | 1 | 8 |
| 2012 | 2 | 6 |
| 2013 | 2 | 3 |
| 2014 | 3 | 4 |
| 2015 | 3 | 8 |
| 2016 | 3 | 4 |
| 2017 | 3 | 7 |
| 2018 | 7 | 6 |
| 2019 | 9 | 5 |
| 2020 | 3 | 8 |
| 2021 | 9 | 9 |
| 2022 | 6 | 9 |
| 2023 | 6 | 8 |
| 2024 | 9 | 7 |
| 2025 | 8 | 4 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermal management system and method25 Aug 2026US 12,716,656 B2Transportation IP Holdings, LLC
- Device for heating and cooling food items18 Aug 2026US 12,708,122 B2Lambhusasund Ehf.
- Temperature control apparatus for a gaseous medium31 Mar 2026US 12,590,766 B2AVL List GmbH
- Spiral heat exchanger and heat exchange device30 Dec 2025US 12,510,299 B2Shanghai Xingye Materials Technology Co., Ltd.
- Water heat dissipating system used for condenser coil of water filter apparatus and water filter apparatus7 Oct 2025US 12,435,914 B2Karofi Holding Joint Stock Company
- Three-dimensional spiral heat exchanger with flat, curved, angled, and corrugate plates31 Jul 2025US 2025/0244082 A1
- Spiral gravity fed heat exchanger26 Jun 2025US 2025/0207863 A1X Development LLC
- Folded Double Wall Heat Exchanger Tubes and Methods of Manufacture6 Mar 2025US 2025/0075981 A1Rheem Manufacturing Company
- Heat supply-energy-saving equipment for printing and dyeing factory20 Feb 2025US 2025/0060093 A1Guangdong University of Technology
- Phase change materials29 Aug 2024US 2024/0287369 A1Petroliam Nasional Berhad (Petronas)
Most cited
By later US patents
- Method for producing heat sink and heat sink thus produced58US 4,747,450 AKabushiki Kaisha Toshiba · 1988
- Heat exchanger for a fast cooldown cryostat57US 4,781,033 AAPD Cryogenics, Inc. · 1988
- Swirl flow heat exchanger with reverse spiral configuration51US 4,883,117 ASundstrand Corporation · 1989
- Apparatus for the liquefaction of natural gas and methods relating to same45US 6,962,061 B2Battelle Energy Alliance, LLC · 2005
- Apparatus for the liquefaction of natural gas and methods related to same44US 6,581,409 B2Bechtel BWXT Idaho, LLC · 2003