F04D 29/2205
Conventional flow pattern
Official title: {Conventional flow pattern}
F04D29/2205 (Conventional flow pattern) appears on 440 US grants and 432 published applications in this corpus.
Search patents in F04D- Granted patents
- 440
- Published applications
- 432
- Assignees
- 310
- Inventors
- 1,009
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 12 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 2 |
| 2002 | 11 | 6 |
| 2003 | 9 | 7 |
| 2004 | 4 | 7 |
| 2005 | 5 | 5 |
| 2006 | 4 | 6 |
| 2007 | 3 | 7 |
| 2008 | 8 | 12 |
| 2009 | 5 | 8 |
| 2010 | 1 | 13 |
| 2011 | 4 | 10 |
| 2012 | 9 | 10 |
| 2013 | 14 | 19 |
| 2014 | 7 | 13 |
| 2015 | 9 | 27 |
| 2016 | 10 | 26 |
| 2017 | 16 | 23 |
| 2018 | 18 | 23 |
| 2019 | 24 | 37 |
| 2020 | 26 | 28 |
| 2021 | 29 | 29 |
| 2022 | 28 | 25 |
| 2023 | 24 | 17 |
| 2024 | 25 | 30 |
| 2025 | 24 | 26 |
| 2026 | 16 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multiple blade rows for impeller and diffuser stages15 Sep 2026US 12,736,061 B2
- Method of designing single-channel pump and single-channel pump25 Aug 2026US 12,716,425 B2Korea Institute of Industrial Technology
- Composite cross-over diffuser for a centrifugal pump, centrifugal pump comprising the same and corresponding manufacturing process9 Jun 2026US 12,650,131 B2Waterax Inc.
- Fluid pump including an impeller26 May 2026US 12,638,020 B1ITT Manufacturing Enterprises, Inc.
- Impeller pump and method26 May 2026US 12,638,021 B2Pentair Flow Technologies, LLC
- Impeller pump and method24 Sep 2026US 2026/0286970 A1Pentair Flow Technologies, LLC
- High-speed pressurized impeller disk27 Aug 2026US 2026/0251150 A1P3 Technologies, LLC
- High-speed pressurized impeller disk27 Aug 2026US 2026/0251151 A1P3 Technologies, LLC
- Stage-by-stage hydraulic design method for impellers of multistage gasliquid multiphase pump20 Aug 2026US 2026/0244813 A1Jiangsu University
- Centrifugal compressor impeller with nonlinear backwall13 Aug 2026US 2026/0235138 A1
Most cited
By later US patents
- Centrifugal blood pump with impeller212US 4,589,822 AMICI Limited Partnership IV · 1986
- Submerisble molten metal pump157US 5,203,681 A1993
- Sump pump monitoring and control system151US 6,676,382 B2Campbell Hausfeld/Scott Fetzer Company · 2004
- Submersible molten metal pump143US 5,330,328 A1994
- Molten metal pump with vaned impeller143US 5,634,770 AMetaullics Systems Co., L.P. · 1997