B21C 37/207
With helical guides
Official title: {with helical guides}
B21C37/207 (With helical guides) appears on 156 US grants and 75 published applications in this corpus.
Search patents in B21C- Granted patents
- 156
- Published applications
- 75
- Assignees
- 85
- Inventors
- 266
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 4 |
| 2003 | 3 | 6 |
| 2004 | 4 | 3 |
| 2005 | 4 | 6 |
| 2006 | 1 | 1 |
| 2007 | 3 | 5 |
| 2008 | 3 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 4 |
| 2012 | 2 | 3 |
| 2013 | 3 | 1 |
| 2014 | 4 | 2 |
| 2015 | 1 | 3 |
| 2016 | 2 | 1 |
| 2017 | 4 | 3 |
| 2018 | 2 | 5 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 6 | 5 |
| 2022 | 3 | 5 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Inner spiral grooved tube with excellent heat transfer property and heat exchanger10 Jun 2025US 12,326,304 B2MA Aluminum Corporation
- Asymmetric flow path topology27 May 2025US 12,313,351 B2General Electric Company
- Process cooling rod28 Jan 2025US 12,209,816 B2SaniSure, Inc.
- Process cooling rod27 Feb 2024US 11,913,731 B2SaniSure, Inc.
- Method for producing a highly heat-resistant weapon barrel provided with a twist profile14 Nov 2023US 11,814,694 B2Rheinmetall Waffe Munition GmbH
- Process cooling rod13 Jun 2024US 2024/0191952 A1SaniSure, Inc.
- Process cooling rod7 Dec 2023US 2023/0392879 A1SaniSure, Inc.
- Apparatus and method for pre-forming a metal strip for the manufacture of roll formed and welded tubes7 Sep 2023US 2023/0278085 A1Hydro Extruded Solutions AS
- Inner spiral grooved tube with excellent heat transfer property and heat exchanger29 Dec 2022US 2022/0412669 A1MA Aluminum Corporation
- Asymmetric flow path topology17 Nov 2022US 2022/0364800 A1General Electric Company
Most cited
By later US patents
- Heat transfer tube having internal ridges, and method of making same84US 4,660,630 AWolverine Tube, Inc. · 1987
- Methods of making mud motors49US 6,543,132 B1Baker Hughes Incorporated · 2003
- Heat transfer tube for use in boiling type heat exchangers and method of producing the same43US 4,216,826 AFurukawa Metals Co., Ltd. · 1980
- Y and T-finned tubes and methods and apparatus for their making41US 4,168,618 AWieland-Werke AG · 1979
- Multi-wire electric power cable, particularly a supply cable for borehole units41US 4,749,823 AKabelmetal Electro GmbH · 1988