F04D 29/541
Specially adapted for elastic fluid pumps
Official title: {Specially adapted for elastic fluid pumps (F04D29/56 takes precedence)}
F04D29/541 (Specially adapted for elastic fluid pumps) appears on 2,095 US grants and 2,337 published applications in this corpus.
Search patents in F04D- Granted patents
- 2,095
- Published applications
- 2,337
- Assignees
- 606
- Inventors
- 4,144
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 10 | 0 |
| 1996 | 16 | 0 |
| 1997 | 14 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 1 |
| 2002 | 28 | 21 |
| 2003 | 32 | 27 |
| 2004 | 18 | 45 |
| 2005 | 21 | 47 |
| 2006 | 41 | 53 |
| 2007 | 23 | 69 |
| 2008 | 30 | 66 |
| 2009 | 29 | 40 |
| 2010 | 40 | 56 |
| 2011 | 40 | 57 |
| 2012 | 61 | 65 |
| 2013 | 40 | 84 |
| 2014 | 47 | 88 |
| 2015 | 50 | 107 |
| 2016 | 61 | 199 |
| 2017 | 104 | 221 |
| 2018 | 144 | 268 |
| 2019 | 241 | 134 |
| 2020 | 238 | 141 |
| 2021 | 116 | 86 |
| 2022 | 131 | 88 |
| 2023 | 99 | 113 |
| 2024 | 121 | 83 |
| 2025 | 94 | 89 |
| 2026 | 42 | 89 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Blowing device and blowing device operating method29 Sep 2026US 12,747,738 B2Samsung Electronics Co., Ltd.
- Compressor shroud with swept grooves22 Sep 2026US 12,742,459 B2Pratt & Whitney Canada Corp.
- Fan shroud with flow directing deflectors22 Sep 2026US 12,742,460 B1Unada Co. Ltd.
- Handheld blower15 Sep 2026US 12,733,600 B2Milwaukee Electric Tool Corporation
- Air guide ring and axial flow fan comprising same8 Sep 2026US 12,729,697 B2Tyco Fire & Security GmbH
- Flow deflector having channels with double ejection angles1 Oct 2026US 2026/0298265 A1Safran Aircraft Engines
- Vacuum pump and stator disc24 Sep 2026US 2026/0286966 A1Edwards Japan Limited
- Blower24 Sep 2026US 2026/0286981 A1
- Guide Vane Segment17 Sep 2026US 2026/0275876 A1MTU Aero Engines AG
- Fan module17 Sep 2026US 2026/0276003 A1Shenzhen Jisu Technology Co., Ltd
Most cited
By later US patents
- Heart assist device with expandable impeller pump411US 7,841,976 B2The Penn State Research Foundation · 2010
- Turbofan gas turbine engine242US 4,827,712 AROLLS-ROYCE plc · 1989
- Variable geometry guide vane for a gas turbine engine199US 7,632,064 B2United Technologies Corporation · 2009
- Leaned and swept fan outlet guide vanes140US 6,195,983 B1General Electric Company · 2001
- Fan and housing139US 4,548,548 AAirflow Research and Manufacturing Corporation · 1985