B21D 9/03
And built-up from loose elements
Official title: and built-up from loose elements, e.g. series of balls
B21D9/03 (And built-up from loose elements) appears on 53 US grants and 34 published applications in this corpus.
Search patents in B21D- Granted patents
- 53
- Published applications
- 34
- Assignees
- 43
- Inventors
- 106
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 2 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 4 |
| 2017 | 2 | 0 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 0 | 3 |
| 2022 | 8 | 3 |
| 2023 | 0 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Device for the internal bending of pipes for pipelines28 Oct 2025US 12,453,998 B2Bendforce GmbH
- Mandrel for pipe bending machine27 May 2025US 12,311,430 B2Cml International S. P. A
- Push-bending forming device and method for titanium alloy tubes1 Apr 2025US 12,263,519 B2Nanchang Hangkong University
- Mandrel, bent tube, and method and apparatus for producing bent tube30 Apr 2024US 11,969,779 B2Nippon Steel Corporation
- Shaping method and shaping device for double pipe27 Feb 2024US 11,911,819 B2Futaba Industrial Co., Ltd.
- Mandrel assembly for a tube bending machine27 Nov 2025US 2025/0360548 A1Blm S.P.A.
- Push-bending forming device and method for titanium alloy tubes5 Dec 2024US 2024/0399436 A1Nanchang Hangkong University
- Device for the internal bending of pipes for pipelines17 Oct 2024US 2024/0342780 A1Bendforce GmbH
- Shaping method and shaping device for double pipe24 Aug 2023US 2023/0264247 A1Futaba Industrial Co., Ltd.
- Mandrel for pipe bending machine8 Jun 2023US 2023/0173565 A1Cml International S. P. A
Most cited
By later US patents
- Mandrel assembly for tube-bending apparatus29US 6,155,091 AArvin Industries, Inc. · 2000
- Rotary compression bending machine24US 4,524,599 A1985
- Apparatus for bending rectangular tubes24US 4,744,233 AAP Industries, Inc. · 1988
- Tube bending mandrel22US 6,085,572 ATube Bending Cocepts, Inc. · 2000
- Multi-flex tube bending mandrel21US 4,475,375 A1984