F04D 29/58
Cooling
Official title: Cooling (of machines or engines in general F01P); Heating; Diminishing heat transfer {(for the motor of air-pump units F04D25/082; cooling of shafts or bearings F04D29/04)}
F04D29/58 (Cooling) appears on 3,150 US grants and 3,611 published applications in this corpus.
Search patents in F04D- Granted patents
- 3,150
- Published applications
- 3,611
- Assignees
- 1,339
- Inventors
- 7,183
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 13 | 0 |
| 1978 | 12 | 0 |
| 1979 | 4 | 0 |
| 1980 | 15 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 17 | 0 |
| 1990 | 23 | 0 |
| 1991 | 15 | 0 |
| 1992 | 20 | 0 |
| 1993 | 23 | 0 |
| 1994 | 30 | 0 |
| 1995 | 11 | 0 |
| 1996 | 19 | 0 |
| 1997 | 25 | 0 |
| 1998 | 29 | 0 |
| 1999 | 44 | 0 |
| 2000 | 42 | 0 |
| 2001 | 58 | 10 |
| 2002 | 68 | 72 |
| 2003 | 67 | 71 |
| 2004 | 48 | 68 |
| 2005 | 32 | 86 |
| 2006 | 54 | 98 |
| 2007 | 48 | 91 |
| 2008 | 56 | 106 |
| 2009 | 42 | 84 |
| 2010 | 55 | 81 |
| 2011 | 49 | 78 |
| 2012 | 76 | 115 |
| 2013 | 63 | 131 |
| 2014 | 79 | 140 |
| 2015 | 86 | 174 |
| 2016 | 97 | 220 |
| 2017 | 129 | 235 |
| 2018 | 154 | 241 |
| 2019 | 222 | 244 |
| 2020 | 244 | 217 |
| 2021 | 203 | 206 |
| 2022 | 185 | 188 |
| 2023 | 175 | 195 |
| 2024 | 182 | 154 |
| 2025 | 174 | 173 |
| 2026 | 92 | 133 |
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
- Compact speed-increasing thrust module for horizontal pump systems15 Sep 2026US 12,736,065 B1Mingo Manufacturing Incorporated
- Fan casing, blower assembly, and vehicle air conditioning system15 Sep 2026US 12,738,802 B2Luxshare Intelligent Manufacture Technology (Changshu) Co., Ltd
- Electric motor including outer rotor body, surrounding cover, and fan integrally formed with the cover15 Sep 2026US 12,738,807 B2Milwaukee Electric Tool Corporation
- Marine drives and cooling pumps for marine drives8 Sep 2026US 12,728,974 B1Brunswick Corporation
- Systems and methods of prediction and management of scaling on components8 Oct 2026US 2026/0309156 A1Schlumberger Technology Corporation
- Fan motor8 Oct 2026US 2026/0309164 A1LG Electronics Inc.
- Engine cooling fan motor for vehicle8 Oct 2026US 2026/0312466 A1New Motech Co., Ltd.
- Fan assembly for an electric motor and electric motor comprising such a fan assembly1 Oct 2026US 2026/0302888 A1ALSTOM Holdings
- High flow deareation vessel24 Sep 2026US 2026/0284555 A1Hitachi Energy Ltd
Most cited
By later US patents
- 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
- System for reducing noise in a hydraulic fracturing fleet263US 9,587,649 B2U.S. Well Services, LLC · 2017
- Thermoelectric heat exchanger227US 6,119,463 AAmerigon Incorporated · 2000
- Thermoelectric heat exchanger196US 6,223,539 B1Amerigon Incorporated · 2001