F28F 1/08
Tubular elements crimped or corrugated in longitudinal section
F28F1/08 (Tubular elements crimped or corrugated in longitudinal section) appears on 162 US grants and 216 published applications in this corpus.
Search patents in F28F- Granted patents
- 162
- Published applications
- 216
- Assignees
- 151
- Inventors
- 550
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 3 |
| 2003 | 0 | 2 |
| 2004 | 1 | 6 |
| 2005 | 1 | 3 |
| 2006 | 4 | 5 |
| 2007 | 3 | 11 |
| 2008 | 6 | 11 |
| 2009 | 0 | 7 |
| 2010 | 3 | 12 |
| 2011 | 3 | 10 |
| 2012 | 5 | 5 |
| 2013 | 3 | 11 |
| 2014 | 6 | 14 |
| 2015 | 5 | 8 |
| 2016 | 3 | 13 |
| 2017 | 8 | 13 |
| 2018 | 4 | 13 |
| 2019 | 18 | 7 |
| 2020 | 4 | 11 |
| 2021 | 8 | 11 |
| 2022 | 6 | 9 |
| 2023 | 7 | 11 |
| 2024 | 10 | 8 |
| 2025 | 5 | 6 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchanger turnaround section18 Aug 2026US 12,710,240 B2Hamilton Sundstrand Corporation
- Battery pack and a method of manufacturing a battery pack16 Jun 2026US 12,658,502 B2Xerotech Limited
- Double-tube heat exchanger and manufacturing method therefor26 May 2026US 12,638,241 B2Sumitomo Riko Company Limited
- Cooling pipe of electric vehicle battery21 Apr 2026US 12,609,374 B2J&S Co., Ltd.
- Heat exchange apparatus and heat pump system provided with same10 Feb 2026US 12,546,539 B2Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd.
- Heat Exchange Assembly for Hydrogenation Device, and Heat Exchange Process11 Jun 2026US 2026/0160498 A1Zhenhai Petrochemical Jianan Engineering Co., Ltd.
- Heat exchange apparatus and heat pump system provided with same21 May 2026US 2026/0139909 A1Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd.
- Shell and tube heat exchanger with flexible diaphragm12 Feb 2026US 2026/0042332 A1Transportation IP Holdings, LLC
- Additively manufactured interwoven heat exchanger with variable channel heights5 Feb 2026US 2026/0036373 A1Hamilton Sundstrand Corporation
- Condensing boiler for use with non-condensing stacks13 Nov 2025US 2025/0347441 A1Aerco International, Inc.
Most cited
By later US patents
- Liquid desiccant air conditioner67US 6,216,483 B1Fedders Corporation · 2001
- Portable liquid desiccant dehumidifier57US 6,138,470 AFedders Corporation · 2000
- Heat engine55US 7,062,913 B2The Ohio State University · 2006
- Diver's gas heater54US 4,013,122 A1977
- Portable liquid desiccant dehumidifier53US 6,134,903 AFedders Corporation · 2000