B21C 37/121
With seams being neither welded nor soldered
Official title: {with seams being neither welded nor soldered}
B21C37/121 (With seams being neither welded nor soldered) appears on 87 US grants and 58 published applications in this corpus.
Search patents in B21C- Granted patents
- 87
- Published applications
- 58
- Assignees
- 51
- Inventors
- 161
- Latest grant
- 18 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 3 |
| 2009 | 1 | 4 |
| 2010 | 2 | 0 |
| 2011 | 0 | 4 |
| 2012 | 1 | 4 |
| 2013 | 3 | 5 |
| 2014 | 2 | 2 |
| 2015 | 1 | 4 |
| 2016 | 3 | 7 |
| 2017 | 3 | 2 |
| 2018 | 3 | 4 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 2 |
| 2023 | 2 | 1 |
| 2024 | 2 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing a carcass, a method of producing a flexible pipe and a flexible pipe18 Jun 2024US 12,011,750 B2National Oilwell Varco Denmark I/S
- Elbow-shaped duct manufacturing apparatus7 May 2024US 11,975,373 B2
- Pipe tubular reinforcement forming machine, and related method1 Aug 2023US 11,712,726 B2Technip N-Power
- Armoured cable and its manufacture17 Jan 2023US 11,554,400 B2
- Immobilised insert10 Aug 2021US 11,085,561 B2Baker Hughes Energy Technology UK Limited
- Smoothing insert26 Feb 2026US 2026/0055831 A1Baker Hughes Energy Technology UK Limited
- Method for assembling a floating solar system, and corresponding system1 Aug 2024US 2024/0253748 A1Helioslite
- A method for producing a carcass, a method of producing a flexible pipe and a flexible pipe31 Aug 2023US 2023/0271241 A1National Oilwell Varco Denmark I/S
- Elbow-Shaped Duct Manufacturing Apparatus16 Jun 2022US 2022/0184681 A1
- Tubular core and method6 Jan 2022US 2022/0001430 A1Pacific Roller Die Co., Inc.
Most cited
By later US patents
- Method and apparatus for winding a helical pipe from its inside51US 6,637,092 B1Rib Loc Australia Pty Ltd. · 2003
- Helical pipe lock seam45US 4,029,129 A1977
- Flexible piping method and apparatus of producing same44US 4,197,728 A1980
- Flexible cylindrical metal tube43US 3,938,558 AManufacturers Systems, Inc. · 1976
- Casing and flexible tubular conduit comprising such a casing and process for producing it40US 5,669,420 A1997