F04D 29/40
Casings
Official title: Casings; Connections of working fluid {(bleed or by-pass valves F04D15/0011, F04D27/0215)}
F04D29/40 (Casings) appears on 9,762 US grants and 10,885 published applications in this corpus.
Search patents in F04D- Granted patents
- 9,762
- Published applications
- 10,885
- Assignees
- 2,632
- Inventors
- 17,035
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 52 | 0 |
| 1977 | 36 | 0 |
| 1978 | 30 | 0 |
| 1979 | 29 | 0 |
| 1980 | 34 | 0 |
| 1981 | 30 | 0 |
| 1982 | 18 | 0 |
| 1983 | 34 | 0 |
| 1984 | 28 | 0 |
| 1985 | 34 | 0 |
| 1986 | 32 | 0 |
| 1987 | 39 | 0 |
| 1988 | 55 | 0 |
| 1989 | 65 | 0 |
| 1990 | 46 | 0 |
| 1991 | 55 | 0 |
| 1992 | 73 | 0 |
| 1993 | 64 | 0 |
| 1994 | 85 | 0 |
| 1995 | 53 | 0 |
| 1996 | 67 | 0 |
| 1997 | 57 | 0 |
| 1998 | 62 | 0 |
| 1999 | 57 | 0 |
| 2000 | 84 | 0 |
| 2001 | 88 | 19 |
| 2002 | 103 | 99 |
| 2003 | 130 | 119 |
| 2004 | 95 | 157 |
| 2005 | 93 | 192 |
| 2006 | 119 | 188 |
| 2007 | 105 | 228 |
| 2008 | 91 | 259 |
| 2009 | 101 | 213 |
| 2010 | 135 | 284 |
| 2011 | 160 | 259 |
| 2012 | 255 | 301 |
| 2013 | 201 | 377 |
| 2014 | 228 | 448 |
| 2015 | 266 | 545 |
| 2016 | 280 | 784 |
| 2017 | 478 | 805 |
| 2018 | 545 | 842 |
| 2019 | 870 | 730 |
| 2020 | 822 | 730 |
| 2021 | 607 | 650 |
| 2022 | 680 | 573 |
| 2023 | 593 | 616 |
| 2024 | 638 | 561 |
| 2025 | 554 | 469 |
| 2026 | 306 | 437 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Additively manufactured heat exchanger and diffuser pipe coupled to a compressor stage6 Oct 2026US 12,752,921 B2Hamilton Sundstrand Corporation
- Bearing for turbomachine variable pitch stator vane pivot, stator vane comprising such a bearing and turbomachine comprising such stator vanes6 Oct 2026US 12,753,705 B2Safran Aircraft Engines
- Motorized compressor device with air bearing having reduced axial and radial stack-up6 Oct 2026US 12,753,707 B2Garrett Transportation I Inc.
- Fluid pump and method of manufacturing same6 Oct 2026US 12,753,765 B2Temco Industrial, LLC
- Vertical turbine pump and method for producing an elbow housing and/or a lantern housing of a vertical turbine pump6 Oct 2026US 12,753,766 B2Wilo SE
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Centrifugal air blower8 Oct 2026US 2026/0309159 A1Shinano Kenshi Co., Ltd.
- Adjustable impeller casing structure for centrifugal compressor8 Oct 2026US 2026/0309163 A1Harbin Engineering University
- Fan motor8 Oct 2026US 2026/0309164 A1LG Electronics Inc.
- Household appliance having an improved fan and motor assembly and fan and motor assembly for same8 Oct 2026US 2026/0309165 A1Omachron Intellectual Property Inc.
Most cited
By later US patents
- Electronic device806US 9,313,915 B2ASUSTek · 2016
- Heart assist device with expandable impeller pump411US 7,841,976 B2The Penn State Research Foundation · 2010
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008
- Compact low noise efficient blower for CPAP devices351US 7,866,944 B2ResMed Motor Technologies Inc. · 2011
- Blower with bearing tube333US 8,636,479 B2ResMed Motor Technologies Inc. · 2014