F24F 2221/50
Hvac for high buildings
Official title: HVAC for high buildings, e.g. thermal or pressure differences
F24F2221/50 (Hvac for high buildings) appears on 33 US grants and 55 published applications in this corpus.
Search patents in F24F- Granted patents
- 33
- Published applications
- 55
- Assignees
- 31
- Inventors
- 82
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 2 | 9 |
| 2013 | 2 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 5 |
| 2018 | 4 | 3 |
| 2019 | 0 | 4 |
| 2020 | 6 | 2 |
| 2021 | 1 | 4 |
| 2022 | 4 | 3 |
| 2023 | 4 | 4 |
| 2024 | 0 | 2 |
| 2025 | 3 | 3 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method, system and computer program product for controlling an HVAC system5 May 2026US 12,618,583 B2Belimo Holding AG
- System and method of a loop architecture of a fixed piping system implemented within a safety system of a structure to continuously supply breathable air therewithin17 Feb 2026US 12,553,626 B2Rescue Air Systems, Inc.
- Elevator-based air quality sensing system for buildings2 Dec 2025US 12,487,002 B2Kone Corporation
- Hydronic assembly for providing heating, cooling, and ventilation16 Sep 2025US 12,416,415 B2
- HVAC system7 Jan 2025US 12,188,677 B2Omachron Intellectual Property Inc.
- System and method for generating and applying cycling correction factors for first and second HVAC systems in multistory buildings24 Sep 2026US 2026/0287199 A1Lennox Industries Inc.
- Facade Panel Conditioning System25 Jun 2026US 2026/0177253 A1Hydronic Shell Technologies, Inc.
- Control system for an hvac system4 Jun 2026US 2026/0153260 A1Tyco Fire & Security GmbH
- System and method of a loop architecture of a fixed piping system implemented within a safety system of a structure to continuously supply breathable air therewithin7 May 2026US 2026/0126193 A1Rescue Air Systems, Inc.
- Free cooling and heating system15 Jan 2026US 2026/0016183 A1
Most cited
By later US patents
- Indoor/outdoor stadium system for energy use reduction24US 8,555,557 B2Qatar Football Association · 2013
- High-rise building13US 5,347,779 ARLS-Bautechnologie-AG · 1994
- Revolving roof for an indoor/outdoor stadium12US 8,336,261 B2Qatar Football Association · 2012
- Microclimate cooling system for an indoor/outdoor stadium9US 8,387,315 B2Qatar Football Association · 2013
- Building system with flexible facility operation8US 11,536,476 B2Johnson Controls Tyco IP Holdings LLP · 2022