B67D 7/0277
Using negative pressure
Official title: {using negative pressure}
B67D7/0277 (Using negative pressure) appears on 176 US grants and 114 published applications in this corpus.
Search patents in B67D- Granted patents
- 176
- Published applications
- 114
- Assignees
- 92
- Inventors
- 277
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 10 | 2 |
| 2002 | 6 | 8 |
| 2003 | 5 | 6 |
| 2004 | 3 | 4 |
| 2005 | 2 | 5 |
| 2006 | 2 | 4 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 4 | 5 |
| 2011 | 1 | 1 |
| 2012 | 3 | 2 |
| 2013 | 3 | 0 |
| 2014 | 3 | 2 |
| 2015 | 2 | 9 |
| 2016 | 5 | 3 |
| 2017 | 6 | 10 |
| 2018 | 1 | 1 |
| 2019 | 8 | 5 |
| 2020 | 4 | 2 |
| 2021 | 5 | 12 |
| 2022 | 4 | 9 |
| 2023 | 10 | 4 |
| 2024 | 9 | 7 |
| 2025 | 6 | 6 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pilot controlled refill tanks for firefighting aircraft15 Sep 2026US 12,735,312 B2Whaling Fire Line Equipment, Inc.
- Systems, methods, and devices for industrial tower waste extraction4 Aug 2026US 12,698,199 B2Industrial Vacuum Transfer Services USA, LLC
- Assembly, apparatus and method for dispensing fluid products21 Jul 2026US 12,686,610 B2Corob S.p.A.
- System for vacuum-filling a heat exchanger with fluid and method of using27 Jan 2026US 12,535,028 B2
- Fluid transfer system and method of use there6 Jan 2026US 12,515,939 B1
- Systems, methods, and devices for industrial tower waste extraction17 Sep 2026US 2026/0274643 A1Industrial Vacuum Transfer Services USA, LLC
- Systems and methods for cleaning elevated open storage tanks9 Jul 2026US 2026/0193077 A1Industrial Vacuum Transfer Services USA, LLC
- Device for the pressure testing, evacuation and filling of an assembly30 Oct 2025US 2025/0333291 A1DÜRR SOMAC GmbH
- Pilot controlled refill tanks for firefighting aircraft18 Sep 2025US 2025/0289708 A1Whaling Fire Line Equipment, Inc.
- Backup valve for closed transfer coupler17 Jul 2025US 2025/0230029 A1Pentair Flow Technologies, LLC
Most cited
By later US patents
- Apparatus and method for the transfer and delivery of high purity chemicals125US 5,148,945 AApplied Chemical Solutions · 1992
- Dispensing valve120US 4,978,036 AKoller Enterprises, Inc. · 1990
- Liquid handling system with electronic information storage94US 6,879,876 B2Advanced Technology Materials, Inc. · 2005
- Liquid chemical dispensing system89US 4,601,409 ATritec Industries, Inc. · 1986
- Closed loop dispensing system77US 6,142,345 A2000