F04D 19/046
Combinations of two or more different types of pumps
Official title: {Combinations of two or more different types of pumps}
F04D19/046 (Combinations of two or more different types of pumps) appears on 180 US grants and 146 published applications in this corpus.
Search patents in F04D- Granted patents
- 180
- Published applications
- 146
- Assignees
- 69
- Inventors
- 261
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 10 | 7 |
| 2003 | 5 | 6 |
| 2004 | 6 | 5 |
| 2005 | 3 | 4 |
| 2006 | 5 | 9 |
| 2007 | 2 | 10 |
| 2008 | 2 | 5 |
| 2009 | 2 | 4 |
| 2010 | 4 | 2 |
| 2011 | 4 | 3 |
| 2012 | 3 | 5 |
| 2013 | 1 | 9 |
| 2014 | 6 | 6 |
| 2015 | 4 | 9 |
| 2016 | 6 | 7 |
| 2017 | 6 | 6 |
| 2018 | 4 | 5 |
| 2019 | 11 | 8 |
| 2020 | 6 | 9 |
| 2021 | 7 | 6 |
| 2022 | 7 | 6 |
| 2023 | 6 | 5 |
| 2024 | 5 | 5 |
| 2025 | 4 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-pressure integrated air pump18 Aug 2026US 12,710,032 B2Intex Marketing Ltd.
- Multi-pressure integrated air pump21 Oct 2025US 12,448,958 B2Intex Marketing Ltd.
- Method to operate a vacuum system19 Aug 2025US 12,392,337 B2Atlas Copco Airpower N.V.
- Integrated connector between first and second vacuum pumps creating a vapor phase region environment15 Apr 2025US 12,276,283 B2Edwards Japan Limited
- Vacuum pump18 Mar 2025US 12,253,089 B2Edwards Japan Limited
- Connector for a vacuum pumping system30 Jul 2026US 2026/0218695 A1Edwards Limited
- Multi-pressure integrated air pump29 Jan 2026US 2026/0028973 A1Intex Marketing Ltd.
- Fluid routing for a vacuum pumping system21 Aug 2025US 2025/0266268 A1Edwards Limited
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system28 Nov 2024US 2024/0392786 A1Shanghai Lifengas Co., Ltd
- Pump apparatus and system11 Apr 2024US 2024/0117808 A1
Most cited
By later US patents
- Gas friction pump64US 5,893,702 APfeiffer Vacuum GmbH · 1999
- Fluid rotating apparatus61US 5,197,861 AMatsushita Electric Industrial Co., Ltd. · 1993
- Fluid rotating apparatus with rotor communicating path48US 5,295,798 AMatsushita Electric Industrial Co., Ltd. · 1994
- Vacuum pump system44US 5,733,104 ABalzers-Pfeiffer GmbH · 1998
- Pumping system for a leak detecting device39US 4,919,599 ALeybold Aktiengesellschaft · 1990