F04D 23/001
Pumps adapted for conveying materials or for handling specific elastic fluids
Official title: {Pumps adapted for conveying materials or for handling specific elastic fluids}
F04D23/001 (Pumps adapted for conveying materials or for handling specific elastic fluids) appears on 86 US grants and 58 published applications in this corpus.
Search patents in F04D- Granted patents
- 86
- Published applications
- 58
- Assignees
- 63
- Inventors
- 160
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 3 |
| 2007 | 3 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 3 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 5 |
| 2019 | 1 | 5 |
| 2020 | 4 | 1 |
| 2021 | 0 | 4 |
| 2022 | 3 | 0 |
| 2023 | 3 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Blowing suction device22 Sep 2026US 12,740,517 B2Positec Power Tools (Suzhou) Co., Ltd.
- Balance drums and systems for managing axial forces for pumps and related systems and methods24 Mar 2026US 12,584,488 B2Flowserve US Company
- Air cleaning blower systems, methods, and adaptations30 Sep 2025US 12,427,462 B2Andover Protection Systems, LLC
- Flow control device for axial flow turbomachines in series23 Sep 2025US 12,421,858 B1The United States of America as represented by the Secretary of the Navy
- Radial impeller with maximized inducer area11 Feb 2025US 12,221,976 B1Hamilton Sundstrand Corporation
- Balance drums and systems for managing axial forces for pumps and related systems and methods16 Jul 2026US 2026/0201891 A1
- Balance drums and systems for managing axial forces for pumps and related systems and methods27 Nov 2025US 2025/0361871 A1Dwc & Associates, LLC
- Multi-compression unit for ammonia production5 Jun 2025US 2025/0178912 A1Nuovo Pignone Tecnologie Srl
- Ultra-efficient bladeless turbomachinery5 Jun 2025US 2025/0179919 A1
- Radial impeller with maximized inducer area13 Feb 2025US 2025/0052253 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Multiple-choke apparatus for transporting and metering particulate material51US 5,051,041 AStamet, Inc. · 1991
- Multiple-choke apparatus for transporting and metering particulate material50US 4,988,239 AStamet, Inc. · 1991
- Portable environmental control system46US 6,402,613 B12002
- Debris blower37US 6,073,305 A2000
- Positive discharge contaminant evacuator33US 5,277,232 A1994