B21D 53/025
Louvered fins
Official title: {Louvered fins}
B21D53/025 (Louvered fins) appears on 18 US grants and 12 published applications in this corpus.
Search patents in B21D- Granted patents
- 18
- Published applications
- 12
- Assignees
- 12
- Inventors
- 40
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fin assembling method24 Feb 2026US 12,560,391 B2Daikin Industries, Ltd.
- Apparatus for manufacturing fin and method for manufacturing fin3 Jan 2023US 11,541,446 B2Mitsubishi Electric Corporation
- Device for manufacturing fins and method for manufacturing fins2 Aug 2022US 11,400,510 B2Mitsubishi Electric Corporation
- Tube for a heat exchanger, and method of making the same24 May 2022US 11,340,027 B2Modine Manufacturing Company
- Air fin for a heat exchanger2 Nov 2021US 11,162,742 B2Modine Manufacturing Company
- Fin assembling method7 May 2026US 2026/0126250 A1Daikin Industries, Ltd.
- Fin assembling method9 Jan 2025US 2025/0012519 A1Daikin Industries, Ltd.
- Apparatus for manufacturing fin and method for manufacturing fin11 Mar 2021US 2021/0069771 A1Mitsubishi Electric Corporation
- Tube for a heat exchanger, and method of making the same21 Jan 2021US 2021/0018276 A1Modine Manufacturing Company
- Device for manufacturing fins and method for manufacturing fins12 Nov 2020US 2020/0353532 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Apparatus for making corrugated sheet material18US 4,170,122 ACovrad Limited · 1979
- Heat exchanger fin roll13US 4,067,219 A1978
- Method of manufacture of ventilated sheet metal floor members12US 4,418,558 ABantam Systems, Inc. · 1983
- Process and apparatus for the manufacture of radiator cooling fins12US 4,888,972 APronto Auto Repair Dealerships Inc. · 1989
- Method for manufacturing a corrugated fin and a shaping roll apparatus therefor11US 5,176,020 ANippondenso Co., Ltd. · 1993