B21D 53/04
Of sheet metal
Official title: of sheet metal
B21D53/04 (Of sheet metal) appears on 302 US grants and 285 published applications in this corpus.
Search patents in B21D- Granted patents
- 302
- Published applications
- 285
- Assignees
- 216
- Inventors
- 738
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 6 |
| 2002 | 6 | 12 |
| 2003 | 9 | 6 |
| 2004 | 4 | 7 |
| 2005 | 6 | 7 |
| 2006 | 4 | 6 |
| 2007 | 5 | 3 |
| 2008 | 0 | 2 |
| 2009 | 2 | 6 |
| 2010 | 2 | 13 |
| 2011 | 1 | 8 |
| 2012 | 3 | 14 |
| 2013 | 4 | 10 |
| 2014 | 6 | 10 |
| 2015 | 7 | 16 |
| 2016 | 6 | 13 |
| 2017 | 10 | 7 |
| 2018 | 5 | 15 |
| 2019 | 14 | 14 |
| 2020 | 13 | 16 |
| 2021 | 12 | 21 |
| 2022 | 14 | 18 |
| 2023 | 18 | 21 |
| 2024 | 18 | 17 |
| 2025 | 9 | 9 |
| 2026 | 2 | 8 |
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 pipes having topographic inner structures2 Jun 2026US 12,644,654 B2Karlsruher Institut Fuer Technologie
- Heat exchanger plate and method for producing a heat exchanger plate30 Dec 2025US 12,510,309 B2Benteler Automobiltechnik GmbH
- Plate heat exchanger with overlapping fins and tubes heat exchanger18 Nov 2025US 12,474,125 B2Watergen Ltd.
- Ribbed tubeless heat exchanger for fluid heating systems including a rib component and methods of manufacture thereof7 Oct 2025US 12,435,929 B2Fulton Group N.A., Inc.
- Accurate rolling line alignment for forming aluminum heat exchangers13 Aug 2026US 2026/0233282 A1GM Global Technology Operations LLC
- Longitudinal chamber profile preform and method23 Jul 2026US 2026/0208253 A1Zieta Prozessdesign SpóLka Z Ograniczona Odpowiedzialnoscia
- Method for manufacturing a double-skinned plate incorporating circulation channels and plate obtained thereby23 Jul 2026US 2026/0208294 A1
- Heat exchanger and method therefor23 Jul 2026US 2026/0213298 A1
- Flow path forming member, manufacturing method therefor, and manufacturing apparatus thereof28 May 2026US 2026/0145221 A1Aisin Corporation
Most cited
By later US patents
- Micro miniature refrigerators142US 4,392,362 AThe Board of Trustees of the Leland Stanford Junior University · 1983
- Vapor compression distillation system and method93US 5,968,321 ARidgewood WaterPure Corporation · 1999
- Method of manufacturing a heat exchanger body for recuperative exchangers73US 4,099,928 AAktiebolaget Carl Munters · 1978
- Method of making diffusion bonded and superplastically formed structures73US 4,331,284 ARockwell International Corporation · 1982
- Integral tube and strip fin heat exchanger circuit69US 5,353,868 A1994