F04B 7/02
The valving being fluid-actuated
Official title: the valving being fluid-actuated
F04B7/02 (The valving being fluid-actuated) appears on 297 US grants and 276 published applications in this corpus.
Search patents in F04B- Granted patents
- 297
- Published applications
- 276
- Assignees
- 176
- Inventors
- 502
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 5 |
| 2004 | 1 | 0 |
| 2005 | 1 | 5 |
| 2006 | 1 | 3 |
| 2007 | 0 | 6 |
| 2008 | 1 | 7 |
| 2009 | 4 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 4 | 8 |
| 2013 | 2 | 17 |
| 2014 | 5 | 13 |
| 2015 | 7 | 26 |
| 2016 | 13 | 24 |
| 2017 | 15 | 11 |
| 2018 | 16 | 18 |
| 2019 | 18 | 19 |
| 2020 | 19 | 18 |
| 2021 | 18 | 16 |
| 2022 | 25 | 14 |
| 2023 | 15 | 14 |
| 2024 | 19 | 20 |
| 2025 | 20 | 19 |
| 2026 | 14 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 7/0266The inlet and discharge means being separate members122
- F04B 7/0208The distribution member forming both the inlet and discharge distributor for one56
- F04B 7/0233A common distribution member forming a single discharge distributor for a plurality29
- F04B 7/0291The distribution being realised by moving the cylinder itself11
Recent patents
- Fluid pump assembly6 Oct 2026US 12,753,748 B2
- Through-hardened valve seat for hydraulic fracturing1 Sep 2026US 12,723,662 B2Apex Industrial LLC
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Fluid routing plug19 May 2026US 12,631,166 B2Kerr Machine Co.
- Fluid end12 May 2026US 12,624,684 B2Kerr Machine Co.
- Through-Hardened Valve Seat for Hydraulic Fracturing1 Oct 2026US 2026/0298349 A1Apex Industrial LLC
- Fluid end17 Sep 2026US 2026/0275971 A1Kerr Machine Co.
- Fluid routing plug17 Sep 2026US 2026/0275972 A1Kerr Machine Co.
- Wear ring for a fluid end cartridge28 May 2026US 2026/0146600 A1SPM Oil & Gas Inc.
- Fluid routing plug16 Apr 2026US 2026/0104039 A1Kerr Machine Co.
Most cited
By later US patents
- User interface and monitoring functions for automated peritoneal dialysis systems430US 5,438,510 ADEKA Products Limited Partnership · 1995
- Cassette system integrated apparatus229US 7,967,022 B2DEKA Products Limited Partnership · 2011
- Pumping cassette225US 8,273,049 B2DEKA Products Limited Partnership · 2012
- Pumping cassette184US 8,317,492 B2DEKA Products Limited Partnership · 2012
- Peritoneal dialysis sensor apparatus systems, devices and methods145US 8,366,655 B2DEKA Products Limited Partnership · 2013