Y02B 30/54
Free-cooling systems
Y02B30/54 (Free-cooling systems) appears on 964 US grants and 947 published applications in this corpus.
Search patents in Y02B- Granted patents
- 964
- Published applications
- 947
- Assignees
- 481
- Inventors
- 1,647
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 9 | 0 |
| 1984 | 3 | 0 |
| 1985 | 11 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 10 | 0 |
| 1990 | 17 | 0 |
| 1991 | 14 | 0 |
| 1992 | 9 | 0 |
| 1993 | 9 | 0 |
| 1994 | 19 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 15 | 0 |
| 1999 | 21 | 0 |
| 2000 | 23 | 0 |
| 2001 | 27 | 5 |
| 2002 | 28 | 16 |
| 2003 | 23 | 34 |
| 2004 | 20 | 26 |
| 2005 | 20 | 39 |
| 2006 | 22 | 25 |
| 2007 | 20 | 22 |
| 2008 | 13 | 46 |
| 2009 | 10 | 34 |
| 2010 | 17 | 45 |
| 2011 | 22 | 39 |
| 2012 | 15 | 30 |
| 2013 | 30 | 45 |
| 2014 | 23 | 59 |
| 2015 | 25 | 49 |
| 2016 | 38 | 48 |
| 2017 | 46 | 73 |
| 2018 | 39 | 54 |
| 2019 | 48 | 48 |
| 2020 | 49 | 59 |
| 2021 | 40 | 54 |
| 2022 | 32 | 37 |
| 2023 | 34 | 29 |
| 2024 | 30 | 18 |
| 2025 | 26 | 10 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and methods utilizing fluid coolers and chillers to perform in-series heat rejection and trim cooling25 Aug 2026US 12,716,598 B2Inertech IP LLC
- Evaporative cooling pad for an air treatment unit21 Apr 2026US 12,607,369 B2Munters Europe Aktiebolag
- Cooling assistance device and fan14 Apr 2026US 12,601,513 B1Guangdong Luansheng Electronic Technology Co., Ltd.
- Free cooling system for low ambient temperatures24 Mar 2026US 12,584,661 B2Trane International Inc.
- Building control systems with optimization of equipment life cycle economic value while participating in IBDR and PBDR programs24 Feb 2026US 12,560,346 B2Johnson Controls Technology Company
- Misting fan13 Aug 2026US 2026/0235309 A1Shenzhen Xiaohei Technology Electronics Co., Ltd.
- Evaporative cooling pad for an air treatment unit30 Jul 2026US 2026/0218923 A1Munters Europe Aktiebolag
- Heat exchanger system with machine-learning based optimization5 Mar 2026US 2026/0063368 A1Baltimore Aircoil Company, Inc.
- Membrane-contactor-based air conditioner25 Dec 2025US 2025/0389433 A1Tyco Fire & Security GmbH
- Portable mister device assembly kit16 Oct 2025US 2025/0319487 A1
Most cited
By later US patents
- Scavenger energy converter system its new applications and its control systems239US 6,327,994 B12001
- Water-mist blower cooling system and its new applications215US 6,293,121 B12001
- HVAC control system and methods for operating same173US 9,447,985 B2Johnson Solid State, LLC · 2016
- Adaptive real-time optimization control168US 7,827,813 B2Johnson Controls Technology Company · 2010
- Method for humidifying air135US 5,425,902 ATom Miller, Inc. · 1995