F04B 15/04
The fluids being hot or corrosive
Official title: the fluids being hot or corrosive (for liquids near their boiling point, e.g. under subnormal pressure, F04B15/06)
F04B15/04 (The fluids being hot or corrosive) appears on 100 US grants and 104 published applications in this corpus.
Search patents in F04B- Granted patents
- 100
- Published applications
- 104
- Assignees
- 90
- Inventors
- 287
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 2 | 7 |
| 2009 | 0 | 0 |
| 2010 | 4 | 7 |
| 2011 | 1 | 1 |
| 2012 | 3 | 4 |
| 2013 | 3 | 3 |
| 2014 | 2 | 5 |
| 2015 | 3 | 2 |
| 2016 | 1 | 6 |
| 2017 | 0 | 3 |
| 2018 | 3 | 10 |
| 2019 | 4 | 8 |
| 2020 | 6 | 6 |
| 2021 | 5 | 9 |
| 2022 | 7 | 7 |
| 2023 | 2 | 5 |
| 2024 | 7 | 6 |
| 2025 | 7 | 4 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Multi-piece fluid end10 Feb 2026US 12,546,308 B2Kerr Machine Co.
- Epoxy compositions and methods of use3 Feb 2026US 12,540,254 B2Ennis-Flint, Inc.
- Reciprocating molten metal pump13 Jan 2026US 12,523,206 B1Pyrotek, Inc.
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- Miniature dc electromagnetic pumps of heavy and alkali liquid metals at up to 500 °c for nuclear and industrial applications27 Aug 2026US 2026/0254336 A1UNM Rainforest Innovations
- Robust Downhole Pump Barrel20 Aug 2026US 2026/0243245 A1Q2 Artificial Lift Services LLC
- Circulation apparatus and method of controlling circulation apparatus2 Jul 2026US 2026/0190896 A1SCREEN Holdings Co., Ltd.
- Multi-piece fluid end21 May 2026US 2026/0139669 A1Kerr Machine Co.
Most cited
By later US patents
- Corrosion and wear resistant graphite material164US 4,617,232 AKennecott Corporation · 1986
- Die casting pump116US 6,293,759 B12001
- Coffee maker68US 5,392,694 ABraun GmbH · 1995
- Valve cover assembly and method of using the same56US 8,365,754 B2National Oilwell Varco, L. P. · 2013
- Dual chamber pump46US 5,573,385 AAsti Sae · 1996