B67D 7/725
Using negative pressure
Official title: {using negative pressure}
B67D7/725 (Using negative pressure) appears on 20 US grants and 17 published applications in this corpus.
Search patents in B67D- Granted patents
- 20
- Published applications
- 17
- Assignees
- 9
- Inventors
- 33
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 4 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for vacuum-filling a heat exchanger with fluid and method of using27 Jan 2026US 12,535,028 B2
- Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems14 Oct 2025US 12,441,600 B2Franklin Fueling Systems, Inc.
- Fuel storage and supply arrangement having fuel conditioning assembly29 Apr 2025US 12,286,341 B2Veeder-Root Company
- Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems2 Jan 2024US 11,858,803 B2Franklin Fueling Systems, Inc.
- Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems3 Oct 2023US 11,772,956 B2Franklin Fueling Systems, Inc.
- Device for the pressure testing, evacuation and filling of an assembly30 Oct 2025US 2025/0333291 A1DÜRR SOMAC GmbH
- Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems19 Jun 2025US 2025/0202086 A1Franklin Fueling Systems, Inc.
- Apparatus for vacuum-filling a heat exchanger with fluid and method of using12 Jun 2025US 2025/0187900 A1
- System for vacuum-filling a heat exchanger with fluid and method of using24 Apr 2025US 2025/0129736 A1
- Fuel storage and supply arrangement having fuel conditioning assembly9 Nov 2023US 2023/0356996 A1Veeder-Root Company
Most cited
By later US patents
- Process and device for the conveyance and measuring of medical liquids98US 6,036,668 AFresenius AG · 2000
- Hazardous waste removal devices24US 4,945,955 ABurr-Brown Corporation · 1990
- Multi-compartmented vacuum tank17US 5,492,144 A1996
- Device for emptying a barrel having a highly-viscous content12US 5,078,304 A1992
- Portable chemcial tank with integral transfer system10US 5,558,252 ABASF SE · 1996