B21D 41/023
Comprising rolling elements
Official title: {comprising rolling elements}
B21D41/023 (Comprising rolling elements) appears on 21 US grants and 17 published applications in this corpus.
Search patents in B21D- Granted patents
- 21
- Published applications
- 17
- Assignees
- 13
- Inventors
- 38
- 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 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
| 2026 | 2 | 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.
- Process and tools to perform reactor pressure vessel nozzle expansion mitigating primary coolant leakage10 Mar 2026US 12,573,513 B2GE-Hitachi Nuclear Energy Americas LLC
- 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.
- Flaring device and flaring tool2 Oct 2025US 2025/0303461 A1Makita Corporation
- Electric pipe expander13 Feb 2025US 2025/0050406 A1NAVAC Inc.
- Process and tools to perform reactor pressure vessel nozzle expansion mitigating primary coolant leakage14 Dec 2023US 2023/0402198 A1GE-Hitachi Nuclear Energy Americas LLC
- 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.
Most cited
By later US patents
- Cold rolling positioning roller assembly57US 5,778,715 AGrinnell Corporation · 1998
- Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof31US 8,777,277 B2Victaulic Company · 2014
- Motor driven flaring device23US 5,090,226 AInoac Corporation · 1992
- High-precision sizing, cutting and welding tool system for specialty aerospace alloys13US 5,531,370 A1996
- Pipe element having shoulder, groove and bead13US 9,333,543 B2Victaulic Company · 2016