B21D 39/12
With rollers for expanding and flanging
Official title: with rollers for expanding and flanging
B21D39/12 (With rollers for expanding and flanging) appears on 9 US grants and 4 published applications in this corpus.
Search patents in B21D- Granted patents
- 9
- Published applications
- 4
- Assignees
- 6
- Inventors
- 5
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric pipe expander31 Mar 2026US 12,589,425 B2NAVAC Inc.
- Baffle plate for a pipe expander12 Aug 2025US D1,088,072 S1NAVAC Inc. · Design
- Electric pipe expander4 Feb 2025US 12,214,402 B2NAVAC Inc.
- Electric pipe expander, chuck structure for electric pipe expander, and control circuit for electric pipe expander14 May 2024US 11,980,924 B2Zhejiang Value Mechanical & Electrical Products Co., Ltd.
- Method and apparatus for making a collar to the end of a pipe20 Oct 2015US 9,162,265 B2T-Solutions Oy
- Electric pipe expander13 Feb 2025US 2025/0050406 A1NAVAC Inc.
- Electric pipe expander21 Sep 2023US 2023/0294156 A1Zhejiang Value Mechanical & Electrical Products Co., Ltd.
- Electric pipe expander, chuck structure for electric pipe expander, and control circuit for electric pipe expander9 Jun 2022US 2022/0176437 A1Zhejiang Value Mechanical & Electrical Products Co., Ltd.
- Method and apparatus for making a collar to the end of a pipe30 May 2013US 2013/0133390 A1T-Solutions Oy
Most cited
By later US patents
- Expanding and beading apparatus for tubes and the like19US 4,090,382 AThomas C. Wilson, Inc. · 1978
- Tube expanding and flaring tool9US 4,716,752 ADresser Industries, Inc. · 1988
- Electric pipe expander, chuck structure for electric pipe expander, and control circuit for electric pipe expander5US 11,980,924 B2Zhejiang Value Mechanical & Electrical Products Co., Ltd. · 2024
- Tubing expander for boiler tubes or the like5US 4,327,567 ADresser Industries, Inc. · 1982
- Tube expanding and flange-forming tool4US 6,016,678 ACooper Technologies Company · 2000