F04D 29/2261
With special measures
Official title: {with special measures}
F04D29/2261 (With special measures) appears on 655 US grants and 533 published applications in this corpus.
Search patents in F04D- Granted patents
- 655
- Published applications
- 533
- Assignees
- 395
- Inventors
- 1,212
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 10 | 0 |
| 1988 | 1 | 0 |
| 1989 | 15 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 14 | 0 |
| 2001 | 12 | 5 |
| 2002 | 15 | 6 |
| 2003 | 12 | 10 |
| 2004 | 13 | 16 |
| 2005 | 7 | 16 |
| 2006 | 8 | 14 |
| 2007 | 10 | 10 |
| 2008 | 14 | 13 |
| 2009 | 3 | 14 |
| 2010 | 13 | 21 |
| 2011 | 6 | 11 |
| 2012 | 16 | 11 |
| 2013 | 15 | 21 |
| 2014 | 9 | 18 |
| 2015 | 13 | 31 |
| 2016 | 12 | 28 |
| 2017 | 28 | 41 |
| 2018 | 23 | 36 |
| 2019 | 36 | 42 |
| 2020 | 35 | 26 |
| 2021 | 26 | 21 |
| 2022 | 30 | 23 |
| 2023 | 25 | 31 |
| 2024 | 28 | 30 |
| 2025 | 30 | 21 |
| 2026 | 14 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrodynamic cavitation system for the removal of unwanted, toxic, or contaminated organic and inorganic compounds25 Aug 2026US 12,715,788 B28215 Technology, Inc.
- Gas turbine engine defining a rotor cavity11 Aug 2026US 12,704,095 B2General Electric Company
- Submersible pump with external slicer28 Jul 2026US 12,692,879 B1
- 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
- Enhanced discharge pump for household appliances and washing machine or dishwasher comprising said discharge pump13 Aug 2026US 2026/0235139 A1Askoll Holding S.r.l.
- Pump system30 Jul 2026US 2026/0218719 A1Pentair Flow Technologies, LLC
- Flow Reversing Pump Apparatus23 Jul 2026US 2026/0210323 A1
- Pump9 Jul 2026US 2026/0194065 A1Ebara Corporation
- Fluid pump with inlet seal device11 Jun 2026US 2026/0160261 A1
Most cited
By later US patents
- Pump system for high pressure application176US 9,829,002 B2Tucson Embedded Systems, Inc. · 2017
- Rotary pump with exclusively hydrodynamically suspended impeller167US 6,966,748 B2Ventrassist PTY Ltd. and University of Technology at Sydney · 2005
- Pump system for high pressure application164US 10,465,689 B2Tucson Embedded Systems, Inc. · 2019
- Sump pump monitoring and control system151US 6,676,382 B2Campbell Hausfeld/Scott Fetzer Company · 2004
- Roto-dynamic pump with a backflow recirculator149US 4,375,937 AIngersoll-Rand Company · 1983