B21D 53/027
By helically or spirally winding elongated elements
Official title: {by helically or spirally winding elongated elements}
B21D53/027 (By helically or spirally winding elongated elements) appears on 46 US grants and 22 published applications in this corpus.
Search patents in B21D- Granted patents
- 46
- Published applications
- 22
- Assignees
- 32
- Inventors
- 84
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 2 | 3 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 8 |
| 2022 | 2 | 2 |
| 2023 | 3 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fixing device for reinforcing the joint of a rotary heat exchanger9 Jun 2026US 12,650,267 B2Klingenburg GmbH
- Heat exchange system and method of assembly2 Jan 2024US 11,859,903 B2Air Products and Chemicals, Inc.
- Helically coiled heat exchange array31 Oct 2023US 11,802,737 B2Struthers Energy and Power Limited
- Heat exchanger19 Sep 2023US 11,761,709 B2Hamilton Sundstrand Corporation
- Outer finned tube with mixed-wettability surface and manufacturing method thereof4 Apr 2023US 11,619,455 B2South China University of Technology
- Fixing device for reinforcing the joint of a rotary heat exchanger12 Sep 2024US 2024/0302103 A1Klingenburg GmbH
- Helically coiled heat exchange array13 Oct 2022US 2022/0325958 A1Struthers Energy and Power Limited
- Heat exchange system and method of assembly22 Sep 2022US 2022/0299263 A1Air Products and Chemicals, Inc.
- Outer finned tube with mixed-wettability surface and manufacturing method thereof11 Nov 2021US 2021/0348854 A1South China University of Technology
- Heat exchange system and method of assembly28 Oct 2021US 2021/0333050 A1Air Products and Chemicals, Inc.
Most cited
By later US patents
- Method of producing multiple coil, multiple tube heat exchanger34US 4,451,960 AMolitor Industries, Inc. · 1984
- Method for making a radial flow ceramic rotor for rotary type regenerator heat exchange apparatus: and attendant ceramic rotor constructions22US 4,513,807 AThe United States of America as represented by the Secretary of the Army · 1985
- Shell and coil heat exchanger22US 5,228,505 AAqua Systems, Inc. · 1993
- Energy exchange wheel and method of fabrication21US 4,191,241 AWing Industries, Inc. · 1980
- Method of forming a shell and coil heat exchanger20US 5,088,192 AAqua Systems, Inc. · 1992