F04B 11/0075
Connected in series
Official title: {connected in series}
F04B11/0075 (Connected in series) appears on 74 US grants and 53 published applications in this corpus.
Search patents in F04B- Granted patents
- 74
- Published applications
- 53
- Assignees
- 50
- Inventors
- 128
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 5 |
| 2006 | 5 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 5 |
| 2009 | 3 | 4 |
| 2010 | 3 | 7 |
| 2011 | 2 | 1 |
| 2012 | 3 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 2 |
| 2017 | 3 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 4 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 3 | 4 |
| 2024 | 3 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Liquid feeding pump and liquid feeding method14 Oct 2025US 12,442,363 B2Hitachi High-Tech Corporation
- Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods30 Sep 2025US 12,428,943 B2BJ Energy Solutions, LLC
- Liquid feeding device17 Sep 2024US 12,092,099 B2Shimadzu Corporation
- Pumping systems27 Feb 2024US 11,913,437 B2Quantum Servo Pumping Technologies Pty Ltd
- Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods9 Jan 2024US 11,867,045 B2BJ Energy Solutions, LLC
- Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods18 Dec 2025US 2025/0382861 A1BJ Energy Solutions, LLC
- Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods8 Feb 2024US 2024/0044235 A1BJ Energy Solutions, LLC
- Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods7 Dec 2023US 2023/0392487 A1BJ Energy Solutions, LLC
- Liquid Feeding Pump and Liquid Feeding Method19 Oct 2023US 2023/0332586 A1Hitachi High-Tech Corporation
- Pumping Systems20 Apr 2023US 2023/0120606 A1Quantum Servo Pumping Technologies Pty Ltd
Most cited
By later US patents
- Quadraplex fluid pump268US 4,470,771 ATowler Hydraulics, Inc. · 1984
- Pumping apparatus for delivering liquid at high pressure112US 4,883,409 A1989
- Reverse osmosis method and apparatus88US 4,187,173 A1980
- Pulsationless duplex plunger pump and control method thereof86US 4,808,077 AHitachi, Ltd. · 1989
- Rotary shaft driven reverse osmosis method and apparatus83US 4,288,326 A1981