F04F 5/20
For evacuating
Official title: for evacuating
F04F5/20 (For evacuating) appears on 240 US grants and 245 published applications in this corpus.
Search patents in F04F- Granted patents
- 240
- Published applications
- 245
- Assignees
- 141
- Inventors
- 449
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 5 |
| 2004 | 7 | 3 |
| 2005 | 3 | 3 |
| 2006 | 2 | 5 |
| 2007 | 0 | 5 |
| 2008 | 1 | 3 |
| 2009 | 2 | 2 |
| 2010 | 1 | 6 |
| 2011 | 2 | 5 |
| 2012 | 5 | 7 |
| 2013 | 4 | 11 |
| 2014 | 4 | 6 |
| 2015 | 8 | 24 |
| 2016 | 6 | 21 |
| 2017 | 18 | 20 |
| 2018 | 17 | 19 |
| 2019 | 23 | 19 |
| 2020 | 26 | 18 |
| 2021 | 16 | 10 |
| 2022 | 15 | 16 |
| 2023 | 9 | 10 |
| 2024 | 7 | 16 |
| 2025 | 10 | 5 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Two-stage jet device with flow guide structure15 Sep 2026US 12,736,066 B2Jiangsu University
- Jet pump system9 Jun 2026US 12,650,134 B2Honeywell International Inc.
- Vacuum generator and negative pressure dust suction device having same12 May 2026US 12,622,555 B2Contemporary Amperex Technology (Hong Kong) Limited
- Multi-stage vacuum generator20 Jan 2026US 12,529,385 B2Coval
- Vacuum ejector pump20 Jan 2026US 12,529,386 B2Vtec Co., Ltd.
- Divertor9 Jul 2026US 2026/0196363 A1Kyoto Fusioneering Ltd.
- Two-stage jet device with flow guide structure2 Jul 2026US 2026/0185543 A1Jiangsu University
- Ejector-type vacuum pump assembly having stabilised membrane flow valve, and a flow control unit having stabilised membrane flow valve for use with an ejector-type vacuum pump of such assembly, and a method of con-trolling a vacuum level in a vacuum chamber of an ejector-type vacuum pump of the assembly9 Apr 2026US 2026/0098529 A1
- Ejector-type vacuum pump assembly having stabilised membrane flow valve, and a method of controlling a vacuum level in a vacuum chamber of an ejector-type vacuum pump of the assembly9 Apr 2026US 2026/0098530 A1
- Venturi Powder Pump and Coating Installation Comprising Such a Powder Pump5 Mar 2026US 2026/0063149 A1Exel Industries
Most cited
By later US patents
- Pneumatic powder ejector93US 4,807,814 ASaint-Gobain Vitrage · 1989
- Ultra-high vacuum force, low air consumption pumps54US 4,880,358 AAir-Vac Engineering Company, Inc. · 1989
- Vacuum producing device52US 7,140,389 B2Festo AG & Co. · 2006
- Multistage ejector assembly46US 5,683,227 ASMC Corporation · 1997
- Ejector device38US 4,466,778 A1984