B23K 9/0325
Helicoidal seams
Official title: {helicoidal seams}
B23K9/0325 (Helicoidal seams) appears on 36 US grants and 24 published applications in this corpus.
Search patents in B23K- Granted patents
- 36
- Published applications
- 24
- Assignees
- 22
- Inventors
- 59
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 4 |
| 2021 | 0 | 1 |
| 2022 | 3 | 3 |
| 2023 | 4 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Control system and method for tapered structure construction25 Mar 2025US 12,257,616 B2Keystone Tower Systems, Inc.
- Tube and a method of manufacturing a tube6 Aug 2024US 12,053,811 B2Kanthal AB
- Double-wall spiral welded pipe and manufacturing method thereof24 Oct 2023US 11,796,092 B2Nanjing Lianzhong Engineering Technology Co., Ltd
- Method for designing laminate molded article, production method, production device, and program3 Oct 2023US 11,772,194 B2Kobe Steel, Ltd.
- Tube and a method of manufacturing a tube14 Mar 2023US 11,602,780 B2Sandvik Intellectual Property AB
- Mobile factory of steel sheet coil helical pipe6 Jun 2024US 2024/0181514 A1Memps-Tubos Helicoidais IndúStria E ServiçOs Ltda
- Tube and a method of manufacturing a tube15 Jun 2023US 2023/0182187 A1Sandvik Intellectual Property AB
- Double-wall spiral welded pipe and manufacturing method thereof24 Nov 2022US 2022/0373109 A1Nanjing Lianzhong Engineering Technology Co., Ltd
- Tube and a method of manufacturing a tube27 Oct 2022US 2022/0339688 A1Sandvik Intellectual Property AB
- Control system and method for tapered structure construction22 Sep 2022US 2022/0297175 A1Keystone Tower Systems, Inc.
Most cited
By later US patents
- Heat transfer tubes with internal extended surface13US 3,961,741 AFoster Wheeler Energy Corporation · 1976
- Method for producing welded helical-seam tubes having optimized tube geometry13US 8,941,023 B2Salzgitter Mannesmann Grossrohr GmbH · 2015
- Method for producing helical seam pipes12US 4,061,264 ABlohm & Voss AG · 1977
- Storage tank construction procedures12US 4,121,747 AAnchortank, Inc. · 1978
- Methods and systems for fabricating spiral welded cylinders12US 6,875,942 B2American Railcar Industries, Inc. · 2005