F04B 11/0025
The spring fluid being in direct contact with the pumped fluid
Official title: {the spring fluid being in direct contact with the pumped fluid}
F04B11/0025 (The spring fluid being in direct contact with the pumped fluid) appears on 45 US grants and 37 published applications in this corpus.
Search patents in F04B- Granted patents
- 45
- Published applications
- 37
- Assignees
- 33
- Inventors
- 84
- Latest grant
- 13 May 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 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 5 |
| 2018 | 1 | 5 |
| 2019 | 4 | 3 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 2 |
| 2023 | 4 | 3 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pulsation damper13 May 2025US 12,297,819 B2Aspen Pumps Limited
- Flow cytometer24 Dec 2024US 12,174,106 B2Beckman Coulter, Inc.
- Flow cytometer24 Dec 2024US 12,174,107 B1Beckman Coulter, Inc.
- Mechanically driven modular diaphragm pump20 Feb 2024US 11,905,939 B2Graco Minnesota Inc.
- Flow cytometer18 Jul 2023US 11,703,443 B2Iris International, Inc.
- Flow cytometer15 Jan 2026US 2026/0016397 A1Beckman Coulter, Inc.
- Flow cytometer27 Feb 2025US 2025/0067657 A1Beckman Coulter, Inc.
- Flow cytometer20 Feb 2025US 2025/0060300 A1Beckman Coulter, Inc.
- Flow cytometer26 Dec 2024US 2024/0426740 A1Beckman Coulter, Inc.
- Mechanically driven modular diaphragm pump13 Jul 2023US 2023/0220839 A1Graco Minnesota Inc.
Most cited
By later US patents
- Constant output fluidic system96US 6,767,188 B2Becton, Dickinson and Company · 2004
- Piston pump42US 6,341,950 B12002
- Airless paint sprayer intake dampener and inlet valve spring24US 5,639,219 ACampbell Hausfeld/Scott Fetzer Company · 1997
- Flow pulsatility dampening devices22US 8,366,667 B2Baxter Healthcare S. A. · 2013
- Airless paint sprayer outlet check valve21US 5,609,300 ACampbell Hausfeld/Scott Fetzer Company · 1997