F04D 29/16
Between pressure and suction sides
Official title: between pressure and suction sides
F04D29/16 (Between pressure and suction sides) appears on 913 US grants and 958 published applications in this corpus.
Search patents in F04D- Granted patents
- 913
- Published applications
- 958
- Assignees
- 449
- Inventors
- 2,153
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 12 | 0 |
| 1993 | 8 | 0 |
| 1994 | 14 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 23 | 2 |
| 2002 | 15 | 20 |
| 2003 | 15 | 15 |
| 2004 | 10 | 15 |
| 2005 | 17 | 25 |
| 2006 | 13 | 25 |
| 2007 | 16 | 26 |
| 2008 | 11 | 23 |
| 2009 | 13 | 32 |
| 2010 | 15 | 32 |
| 2011 | 12 | 35 |
| 2012 | 23 | 32 |
| 2013 | 25 | 50 |
| 2014 | 26 | 50 |
| 2015 | 37 | 56 |
| 2016 | 28 | 75 |
| 2017 | 51 | 77 |
| 2018 | 57 | 79 |
| 2019 | 82 | 56 |
| 2020 | 62 | 59 |
| 2021 | 57 | 34 |
| 2022 | 50 | 30 |
| 2023 | 29 | 33 |
| 2024 | 28 | 27 |
| 2025 | 28 | 20 |
| 2026 | 11 | 30 |
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
- Suction liner and centrifugal pump comprising the same2 Jun 2026US 12,644,470 B2Metso Sweden AB
- Compressor cooling system for a turbofan engine19 May 2026US 12,631,125 B1Pratt & Whitney Canada Corp.
- Pump system30 Jul 2026US 2026/0218719 A1Pentair Flow Technologies, LLC
- 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.
Most cited
By later US patents
- Pump impeller seals with spiral grooves127US 4,242,039 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1980
- Split ring seal of a centrifugal pump122US 4,867,638 AAlbert Handtmann Elteka GmbH & Co. KG · 1989
- High speed whirlpool pump121US 5,156,535 AITT Corporation · 1992
- Fan shroud structure112US 4,061,188 AInternational Harvester Company · 1977
- Dynamically sealing ring fan shroud assembly105US 6,599,088 B2BorgWarner Inc. · 2003