B21C 37/225
Longitudinally-ribbed tubes
Official title: {longitudinally-ribbed tubes}
B21C37/225 (Longitudinally-ribbed tubes) appears on 33 US grants and 34 published applications in this corpus.
Search patents in B21C- Granted patents
- 33
- Published applications
- 34
- Assignees
- 29
- Inventors
- 86
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 5 |
| 2012 | 0 | 2 |
| 2013 | 1 | 4 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 3 | 4 |
| 2023 | 0 | 3 |
| 2024 | 3 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotor shaft14 Jan 2025US 12,199,492 B2Metal Forming & Coining Corporation
- Method for producing a flat tube23 Apr 2024US 11,964,320 B2Mahle International GmbH
- Tube assembly for heat management apparatus and method of manufacturing the same12 Mar 2024US 11,927,397 B2Hyundai Mobis Co., Ltd.
- Aircraft heat exchanger finned plate manufacture13 Feb 2024US 11,898,809 B2Rtx Corporation
- Method for manufacturing double-pipe heat exchanger27 Dec 2022US 11,534,818 B2Nichirin Co., Ltd.
- Automatic welding machine for forming longitudinal ribs on tubes16 Jan 2025US 2025/0018495 A1Chastnoe Uchrezhdenie Po Obespecheniyu Nauchnogo Razvitiya Atomnoj Otrasli "Nauka I Innovacii"
- Rotor shaft16 Jan 2025US 2025/0023417 A1
- Method for producing a flat tube1 Jun 2023US 2023/0166317 A1Mahle International GmbH
- Aircraft Heat Exchanger Finned Plate Manufacture23 Feb 2023US 2023/0055470 A1Raytheon Technologies Corporation
- Aircraft Heat Exchanger Finned Plate Manufacture23 Feb 2023US 2023/0057918 A1Raytheon Technologies Corporation
Most cited
By later US patents
- Method of making micro channel heat pipe having corrugated fin elements105US 6,216,343 B1The United States of America as represented by the Secretary of the Air Force · 2001
- Multiple piece tube assembly for use in heat exchangers59US 4,805,693 AModine Manufacturing Company · 1989
- Internally finned tube41US 4,163,474 AE. I. Du Pont de Nemours and Company · 1979
- Radiation plate and method of producing the same40US 5,542,176 A1996
- Light-weight vehicle frame structure20US 4,732,819 AHonda Giken Kogyo Kabushiki Kaisha · 1988