F04D 29/161
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/161 (Especially adapted for elastic fluid pumps) appears on 729 US grants and 777 published applications in this corpus.
Search patents in F04D- Granted patents
- 729
- Published applications
- 777
- Assignees
- 305
- Inventors
- 1,706
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 12 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 20 | 1 |
| 2002 | 12 | 18 |
| 2003 | 14 | 11 |
| 2004 | 7 | 9 |
| 2005 | 13 | 20 |
| 2006 | 10 | 18 |
| 2007 | 11 | 18 |
| 2008 | 7 | 16 |
| 2009 | 10 | 26 |
| 2010 | 12 | 30 |
| 2011 | 8 | 26 |
| 2012 | 18 | 28 |
| 2013 | 23 | 39 |
| 2014 | 22 | 35 |
| 2015 | 30 | 45 |
| 2016 | 21 | 69 |
| 2017 | 39 | 60 |
| 2018 | 52 | 70 |
| 2019 | 74 | 45 |
| 2020 | 54 | 51 |
| 2021 | 48 | 29 |
| 2022 | 41 | 28 |
| 2023 | 24 | 24 |
| 2024 | 23 | 20 |
| 2025 | 26 | 19 |
| 2026 | 9 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Side-channel machine (compressor, vacuum pump or blower) having an extraction duct in the stripper29 Sep 2026US 12,747,732 B2Gardner Denver Deutschland GmbH
- Centrifugal compressor with controlled tolerance stack and methods of assembling the same1 Sep 2026US 12,723,598 B2Copeland Corporation
- System and method for adjusting position of a compressor16 Jun 2026US 12,656,029 B2Tyco Fire & Security GmbH
- Compressor cooling system for a turbofan engine19 May 2026US 12,631,125 B1Pratt & Whitney Canada Corp.
- Diagonal fan19 May 2026US 12,631,198 B2Delta Electronics, Inc.
- Blower device and method for manufacturing same30 Jul 2026US 2026/0218727 A1Nidec Corporation
- Fan motor23 Jul 2026US 2026/0210365 A1LG Electronics Inc.
- Fan device23 Jul 2026US 2026/0210377 A1Cooler Master Co., Ltd.
- Anti-pressure-relief structure for fan23 Jul 2026US 2026/0210378 A1Asia Vital Components Co., Ltd.
- Centrifugal compressor with controlled tolerance stack and methods of assembling the same9 Jul 2026US 2026/0194072 A1Copeland Corporation
Most cited
By later US patents
- Fan shroud structure112US 4,061,188 AInternational Harvester Company · 1977
- Dynamically sealing ring fan shroud assembly105US 6,599,088 B2BorgWarner Inc. · 2003
- Housing with recirculation control for use with banded axial-flow fans95US 5,489,186 AAirflow Research and Manufacturing Corporation · 1996
- Active clearance control system for a turbomachine92US 4,329,114 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1982
- Cooling system for a gas turbine engine compressor89US 5,297,386 ASociete Nationale d'Etude et de Construction de Moteurs D'Aviation "S.N.E.C.M A." · 1994