B21D 53/18
Of hollow or c-shaped cross-section
Official title: of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
B21D53/18 (Of hollow or c-shaped cross-section) appears on 33 US grants and 14 published applications in this corpus.
Search patents in B21D- Granted patents
- 33
- Published applications
- 14
- Assignees
- 26
- Inventors
- 66
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 4 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for manufacturing bearing ring member9 Sep 2025US 12,409,488 B2
- Method and a device for manufacturing a part starting from a cushion made of deformable material, in particular for an edge of an element of an aircraft18 Jun 2024US 12,011,754 B2Airbus Operations GmbH
- Inlet lip skin manufacturing method19 Mar 2024US 11,931,793 B2Creuzet Aeronautique
- Manufacture of annular sectors for producing an air intake lip16 Jan 2024US 11,872,617 B2Safran Nacelles
- Method and device for manufacturing a part from a plate made of a formable material, in particular for the edge of an element of an aircraft5 Dec 2023US 11,833,566 B2Airbus Operations GmbH
- Method for manufacturing bearing ring member9 Jan 2025US 2025/0010356 A1Nsk Ltd.
- Inlet lip skin manufacturing method16 Nov 2023US 2023/0364667 A1Creuzet Aeronautique
- Manufacture of annular sectors for producing an air intake lip28 Sep 2023US 2023/0302520 A1Safran Nacelles
- Method and device for manufacturing a part from a plate made of a formable material, in particular for the edge of an element of an aircraft2 Mar 2023US 2023/0061707 A1Airbus Operations GmbH
- Method and a device for manufacturing a part starting from a cushion made of deformable material, in particular for an edge of an element of an aircraft2 Mar 2023US 2023/0065876 A1Airbus Operations GmbH
Most cited
By later US patents
- Annular gasket for static sealing for very high temperatures and small pressure drops, and method of making31US 4,361,335 ANuovo Pignone S.p.A. · 1982
- Method and apparatus for forming angle ring flanges15US 4,361,021 AUnited McGill Corporation · 1982
- Method of producing split bearing rings13US 4,541,157 ANTN Toyo Bearing Co., Ltd. · 1985
- Rotation detection sensor ring and method of making the same12US 6,392,405 B12002
- Method of producing a rotary member made of a metallic plate9US 7,490,503 B1Kabushiki Kaisha Kanemitsu · 2009