F04D 29/245
For special effects
Official title: {for special effects}
F04D29/245 (For special effects) appears on 56 US grants and 56 published applications in this corpus.
Search patents in F04D- Granted patents
- 56
- Published applications
- 56
- Assignees
- 59
- Inventors
- 147
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 2 | 3 |
| 2015 | 2 | 3 |
| 2016 | 2 | 11 |
| 2017 | 7 | 4 |
| 2018 | 3 | 4 |
| 2019 | 3 | 4 |
| 2020 | 6 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 2 |
| 2023 | 5 | 4 |
| 2024 | 2 | 5 |
| 2025 | 4 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Variable inlet guide vane apparatus combined with compressor end cap6 Jan 2026US 12,516,678 B2Copeland Corporation
- Modular cryogenic permanent magnet electrical motors and generators for submerged motor pumps and turbines and related systems and methods25 Nov 2025US 12,480,497 B2Flowserve US Company
- Electrical submersible pump with single direction lubricant flow25 Nov 2025US 12,480,498 B2Baker Hughes Oilfield Operations LLC
- Pump for conveying wastewater and impeller for such a pump3 Jun 2025US 12,320,364 B2Sulzer Management AG
- Impeller25 Mar 2025US 12,258,974 B1Green Tech Co., Ltd.
- Variable inlet guide vane apparatus30 Apr 2026US 2026/0117792 A1Copeland Corporation
- Modular cryogenic permanent magnet electrical motors and generatorsfor submerged motor pumps and turbines and related systems and methods19 Mar 2026US 2026/0078760 A1Flowserve US Company
- Inducers for cryogenic pumps and related systems and methods28 Nov 2024US 2024/0392787 A1Dwc & Associates, LLC
- Modular cryogenic permanent magnet electrical motors and generators for submerged motor pumps and turbines and related systems and methods28 Nov 2024US 2024/0392789 A1Dwc & Associates, LLC
- Variable inlet guide vane apparatus combined with compressor end cap26 Sep 2024US 2024/0318659 A1Copeland Corporation
Most cited
By later US patents
- Centrifugal blood pump and magnetic coupling141US 5,017,103 ASt. Jude Medical, Inc. · 1991
- Centrifugal pump118US 6,171,078 B2Lust Antriebstechnik GmbH · 2001
- Rotor with logarithmic scaled shape40US 5,934,877 A1999
- Pump impeller38US 4,904,159 ASuburbia Systems, Inc. · 1990
- High performance inducer20US 7,455,497 B2Carter Cryogenics Company, LLC · 2008