B67D 7/645
Barrel pumps
Official title: {Barrel pumps}
B67D7/645 (Barrel pumps) appears on 87 US grants and 62 published applications in this corpus.
Search patents in B67D- Granted patents
- 87
- Published applications
- 62
- Assignees
- 65
- Inventors
- 161
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 3 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 5 |
| 2013 | 3 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 4 |
| 2017 | 2 | 0 |
| 2018 | 0 | 4 |
| 2019 | 3 | 5 |
| 2020 | 1 | 7 |
| 2021 | 8 | 4 |
| 2022 | 3 | 2 |
| 2023 | 4 | 4 |
| 2024 | 3 | 3 |
| 2025 | 1 | 6 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Feeding device for flowable material1 Sep 2026US 12,722,834 B2Toyota Jidosha Kabushiki Kaisha
- Emptying system for emptying paste-like material from barrel-type containers13 Jan 2026US 12,522,453 B2Netzsch Pumpen & Systeme GmbH (DE)
- Apparatus for conveying viscous material2 Sep 2025US 12,403,499 B2Atlas Copco IAS GmbH
- Bulk unloader follower seal11 Jun 2024US 12,007,028 B2Nordson Corporation
- Method and system for emptying a drum containing a viscous liquid2 Jan 2024US 11,858,804 B2C.S.F. Inox S.P.A.
- Drum Emptying Rotating Station11 Dec 2025US 2025/0376368 A1Unibloc Hygienic Technologies UK, Ltd.
- Apparatus for improved transfer and storage of viscous fluids17 Jul 2025US 2025/0230033 A1Limworks, LLC
- Colorant dispenser and color-paste outpouring method for colorant dispenser3 Jul 2025US 2025/0214828 A1Zhengzhou Sanhua Technology & Industry Co., Ltd.
- Follower plate15 May 2025US 2025/0153997 A1Atlas Copco IAS GmbH
- Apparatus for transfer of high viscosity fluids3 Apr 2025US 2025/0109009 A1Limworks, LLC
Most cited
By later US patents
- Hot melt adhesive pumping apparatus having pressure-sensitive feedback control51US 4,090,640 A1978
- Hot melt dispenser with removeable pump in follower35US 4,073,409 AFluid Kinetics, Inc. · 1978
- Hot melt dispenser32US 4,227,069 ANordson Corporation · 1980
- Reciprocating pump with linear displacement sensor31US 6,168,387 AIngersoll-Rand Company · 2001
- Hot melt dispensing apparatus30US 3,976,229 APyles Industries, Inc. · 1976