B21D 51/20
Barrels
Official title: barrels
B21D51/20 (Barrels) appears on 6 US grants and 6 published applications in this corpus.
Search patents in B21D- Granted patents
- 6
- Published applications
- 6
- Assignees
- 5
- Inventors
- 9
- Latest grant
- 30 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of forming a chamber in a barrel blank30 Apr 2024US 11,971,234 B2
- Steel drum and method for manufacturing such a steel drum29 Sep 2015US 9,145,229 B2Greif International Holding BV
- Double-walled barrel and method of its manufacture4 Oct 1994US 5,351,850 ARheinpfalzische Emballagenfabrik G. Schonung GmbH & Co. KG
- Nesting drums20 Nov 1990US 4,971,215 AGrief Brothers Corporation
- Nesting drums-method of making the same23 Apr 1985US 4,512,700 AGreif Bros. Corporation
- Method of forming a chamber in a barrel blank4 Jul 2024US 2024/0219139 A1
- Method of forming a chamber in a barrel blank3 Aug 2023US 2023/0243613 A1
- Flowforming Gun Barrels and Similar Tubular Devices9 Jan 2020US 2020/0009632 A1ATI Properties, Inc.
- Steel Drum And Method For Manufacturing Such A Steel Drum2 Oct 2014US 2014/0291336 A1Greif International Holding BV
- Flowforming Gun Barrels and Similar Tubular Devices23 Sep 2010US 2010/0236122 A1
Most cited
By later US patents
- Method for detachably sealing together the sections of a barrel container assembly22US 4,040,372 A1977
- Nesting drums-method of making the same11US 4,512,700 AGreif Bros. Corporation · 1985
- Nesting drums6US 4,971,215 AGrief Brothers Corporation · 1990
- Double-walled barrel and method of its manufacture6US 5,351,850 ARheinpfalzische Emballagenfabrik G. Schonung GmbH & Co. KG · 1994