B21D 41/02
Enlarging
B21D41/02 (Enlarging) appears on 335 US grants and 322 published applications in this corpus.
Search patents in B21D- Granted patents
- 335
- Published applications
- 322
- Assignees
- 256
- Inventors
- 680
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 3 |
| 2002 | 5 | 7 |
| 2003 | 8 | 5 |
| 2004 | 4 | 14 |
| 2005 | 8 | 7 |
| 2006 | 10 | 7 |
| 2007 | 4 | 7 |
| 2008 | 4 | 9 |
| 2009 | 1 | 9 |
| 2010 | 8 | 10 |
| 2011 | 7 | 13 |
| 2012 | 5 | 12 |
| 2013 | 9 | 19 |
| 2014 | 11 | 17 |
| 2015 | 9 | 15 |
| 2016 | 19 | 16 |
| 2017 | 18 | 16 |
| 2018 | 19 | 25 |
| 2019 | 14 | 18 |
| 2020 | 24 | 13 |
| 2021 | 14 | 15 |
| 2022 | 11 | 16 |
| 2023 | 13 | 13 |
| 2024 | 10 | 11 |
| 2025 | 9 | 16 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus for mechanical machining by plastic deformation or for assembling a pair of components, and relative machine tool comprising such an apparatus12 May 2026US 12,623,271 B2GNUTTI TRANSFER S.p.A.
- Electric pipe expander31 Mar 2026US 12,589,425 B2NAVAC Inc.
- Apparatus for the orbital cutting and calibration of tubes17 Mar 2026US 12,576,438 B2Blm S.P.A.
- Pipe expanding tool17 Mar 2026US 12,576,441 B2Makita Corporation
- 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
- Tube expansion tool1 Oct 2026US 2026/0295652 A1Makita Corporation
- Pex expansion tool17 Sep 2026US 2026/0273609 A1Milwaukee Electric Tool Corporation
- Pipe expander30 Jul 2026US 2026/0216780 A1Emerson Professional Tools (Shanghai) Co., Ltd.
- Ac electric pipe extension tool23 Jul 2026US 2026/0208256 A1Changzhou Canty Electric Industry Co., Ltd
- Flare forming device and flare forming tool2 Jul 2026US 2026/0183821 A1Makita Corporation
Most cited
By later US patents
- Device for expanding pipes176US 5,014,779 A1991
- Apparatus and method to expand casing104US 6,622,797 B2Hydril Company · 2003
- Method and apparatus for tube expansion86US 4,934,038 ACaterpillar Inc. · 1990
- Method and apparatus for expanding tubular members75US 4,530,231 AAPX Group, Inc. · 1985
- Cold rolling positioning roller assembly57US 5,778,715 AGrinnell Corporation · 1998