B21D 53/02
Heat exchangers or parts thereof
Official title: heat exchangers {or parts thereof}, e.g. radiators, condensers {fins, headers}(making finned or ribbed tubes by fixing strip material or the like to tubes B21C37/22)
B21D53/02 (Heat exchangers or parts thereof) appears on 1,108 US grants and 1,076 published applications in this corpus.
Search patents in B21D- Granted patents
- 1,108
- Published applications
- 1,076
- Assignees
- 587
- Inventors
- 2,461
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 13 | 0 |
| 1978 | 23 | 0 |
| 1979 | 13 | 0 |
| 1980 | 15 | 0 |
| 1981 | 13 | 0 |
| 1982 | 8 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 12 | 0 |
| 1986 | 25 | 0 |
| 1987 | 16 | 0 |
| 1988 | 14 | 0 |
| 1989 | 18 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 22 | 0 |
| 1993 | 20 | 0 |
| 1994 | 12 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 23 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 8 |
| 2002 | 14 | 25 |
| 2003 | 21 | 17 |
| 2004 | 11 | 22 |
| 2005 | 20 | 22 |
| 2006 | 10 | 26 |
| 2007 | 10 | 14 |
| 2008 | 1 | 22 |
| 2009 | 7 | 32 |
| 2010 | 11 | 51 |
| 2011 | 16 | 50 |
| 2012 | 21 | 55 |
| 2013 | 29 | 86 |
| 2014 | 30 | 80 |
| 2015 | 51 | 71 |
| 2016 | 51 | 42 |
| 2017 | 54 | 34 |
| 2018 | 29 | 55 |
| 2019 | 50 | 56 |
| 2020 | 41 | 56 |
| 2021 | 45 | 63 |
| 2022 | 56 | 50 |
| 2023 | 40 | 52 |
| 2024 | 50 | 33 |
| 2025 | 26 | 36 |
| 2026 | 13 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Interlocking plate heat exchanger22 Sep 2026US 12,741,309 B2Rtx Corporation
- Method for producing heat conductive member and heat exchanger8 Sep 2026US 12,728,455 B2NGK Insulators, Ltd.
- Tubing cutter and methods to cut spine-fin tubing and couple a header tube to spine-fin tubing23 Jun 2026US 12,661,727 B2Arrow Fabricated Tubing, Inc.
- Methods for forming a wick16 Jun 2026US 12,654,219 B1Westinghouse Electric Corp.
- Fixing device for reinforcing the joint of a rotary heat exchanger9 Jun 2026US 12,650,267 B2Klingenburg GmbH
- Accurate rolling line alignment for forming aluminum heat exchangers13 Aug 2026US 2026/0233282 A1GM Global Technology Operations LLC
- Coil Loading Assembly, System and Method13 Aug 2026US 2026/0233964 A1
- Longitudinal chamber profile preform and method23 Jul 2026US 2026/0208253 A1Zieta Prozessdesign SpóLka Z Ograniczona Odpowiedzialnoscia
- Method for Producing a Folded Flat Tube23 Jul 2026US 2026/0208279 A1Mahle International GmbH
- Method for manufacturing a double-skinned plate incorporating circulation channels and plate obtained thereby23 Jul 2026US 2026/0208294 A1
Most cited
By later US patents
- Micro miniature refrigerators142US 4,392,362 AThe Board of Trustees of the Leland Stanford Junior University · 1983
- Heat exchanger141US 6,964,296 B2Modine Manufacturing Company · 2005
- Vapor compression distillation system and method93US 5,968,321 ARidgewood WaterPure Corporation · 1999
- Electronic equipment enclosure79US 9,351,427 B2Chatsworth Products, Inc. · 2016
- Method of manufacturing a heat exchanger body for recuperative exchangers73US 4,099,928 AAktiebolaget Carl Munters · 1978