B21C 37/06
Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products
Official title: of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/06 (Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products) appears on 2,179 US grants and 1,584 published applications in this corpus.
Search patents in B21C- Granted patents
- 2,179
- Published applications
- 1,584
- Assignees
- 1,182
- Inventors
- 4,233
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 40 | 0 |
| 1977 | 36 | 0 |
| 1978 | 51 | 0 |
| 1979 | 39 | 0 |
| 1980 | 38 | 0 |
| 1981 | 34 | 0 |
| 1982 | 37 | 0 |
| 1983 | 27 | 0 |
| 1984 | 42 | 0 |
| 1985 | 35 | 0 |
| 1986 | 44 | 0 |
| 1987 | 33 | 0 |
| 1988 | 45 | 0 |
| 1989 | 37 | 0 |
| 1990 | 31 | 0 |
| 1991 | 36 | 0 |
| 1992 | 34 | 0 |
| 1993 | 35 | 0 |
| 1994 | 33 | 0 |
| 1995 | 32 | 0 |
| 1996 | 34 | 0 |
| 1997 | 34 | 0 |
| 1998 | 53 | 0 |
| 1999 | 64 | 0 |
| 2000 | 65 | 0 |
| 2001 | 56 | 27 |
| 2002 | 62 | 80 |
| 2003 | 54 | 66 |
| 2004 | 54 | 62 |
| 2005 | 47 | 75 |
| 2006 | 31 | 64 |
| 2007 | 27 | 67 |
| 2008 | 25 | 63 |
| 2009 | 27 | 71 |
| 2010 | 35 | 56 |
| 2011 | 33 | 68 |
| 2012 | 39 | 67 |
| 2013 | 47 | 69 |
| 2014 | 42 | 64 |
| 2015 | 62 | 73 |
| 2016 | 63 | 56 |
| 2017 | 54 | 43 |
| 2018 | 43 | 65 |
| 2019 | 45 | 73 |
| 2020 | 53 | 88 |
| 2021 | 66 | 77 |
| 2022 | 59 | 60 |
| 2023 | 60 | 54 |
| 2024 | 35 | 45 |
| 2025 | 46 | 25 |
| 2026 | 25 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21C 37/15Making tubes of special shape1,281
- B21C 37/08Making tubes with welded or soldered seams597
- B21C 37/12Making tubes or metal hoses with helically arranged seams276
- B21C 37/30Finishing tubes127
- B21C 37/10Making tubes with seams being neither welded nor soldered77
- B21C 37/065Starting from a specific blank57
- B21C 37/14Making tubes from doubled flat material30
Recent patents
- Devices and method for shaping a tubular hollow element29 Sep 2026US 12,746,587 B2FELSS Systems GmbH
- Mobile factory of steel sheet coil helical pipe29 Sep 2026US 12,746,588 B2MEMPS-TUBOS HELI{grave over (C)}OIDAIS INDÚSTRIA E SERVIÇOS LTDA
- High-strength hot rolled steel sheet and method for producing the same, and high-strength electric resistance welded steel pipe and method for producing the same15 Sep 2026US 12,735,758 B2Jfe Steel Corporation
- Method for producing a pressure vessel1 Sep 2026US 12,723,712 B2Voestalpine Rotec GmbH
- Method and device for perforating a pipe wall25 Aug 2026US 12,715,029 B2T-Drill Oy
- Steel pipe out-of-roundness prediction method, steel pipe out-of-roundness control method, steel pipe manufacturing method, steel pipe out-of-roundness prediction model generation method, and steel pipe out-of-roundness prediction device8 Oct 2026US 2026/0307127 A1Jfe Steel Corporation
- Seam position detection method, manufacturing method of welded steel pipe, quality control method of welded steel pipe, seam position detection apparatus, and manufacturing equipment of welded steel pipe8 Oct 2026US 2026/0307128 A1Jfe Steel Corporation
- Method and apparatus for calibrating a metal profile blank24 Sep 2026US 2026/0284731 A1Norsk Hydro ASA
- Tubing material, method for producing tubing material, and stent, guidewire, and pressure guidewire3 Sep 2026US 2026/0256993 A1Furukawa Electric Co., Ltd.
- Bending machine27 Aug 2026US 2026/0249340 A1Odfjell Oceanwind AS
Most cited
By later US patents
- Deformable member175US 6,896,049 B2Zeroth Technology Ltd. · 2005
- Apparatus for manufacturing profile pipes used in well construction123US 5,119,661 A1992
- Tubular structures and knurling systems and methods of manufacture and use thereof118US 9,933,092 B2Deflecto, LLC · 2018
- Structure of lightweight bars and connector means therefore105US 4,069,638 AScanovator AB · 1978
- 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