Y02A 30/27
Relating to heating, ventilation or air conditioning [hvac] technologies
Official title: Relating to heating, ventilation or air conditioning [HVAC] technologies
Y02A30/27 (Relating to heating, ventilation or air conditioning [hvac] technologies) appears on 1,507 US grants and 1,065 published applications in this corpus.
Search patents in Y02A- Granted patents
- 1,507
- Published applications
- 1,065
- Assignees
- 667
- Inventors
- 2,531
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 25 | 0 |
| 1978 | 28 | 0 |
| 1979 | 30 | 0 |
| 1980 | 30 | 0 |
| 1981 | 38 | 0 |
| 1982 | 31 | 0 |
| 1983 | 20 | 0 |
| 1984 | 45 | 0 |
| 1985 | 35 | 0 |
| 1986 | 24 | 0 |
| 1987 | 30 | 0 |
| 1988 | 24 | 0 |
| 1989 | 18 | 0 |
| 1990 | 20 | 0 |
| 1991 | 25 | 0 |
| 1992 | 21 | 0 |
| 1993 | 31 | 0 |
| 1994 | 35 | 0 |
| 1995 | 21 | 0 |
| 1996 | 33 | 0 |
| 1997 | 26 | 0 |
| 1998 | 48 | 0 |
| 1999 | 33 | 0 |
| 2000 | 26 | 0 |
| 2001 | 38 | 8 |
| 2002 | 31 | 27 |
| 2003 | 38 | 25 |
| 2004 | 21 | 27 |
| 2005 | 16 | 36 |
| 2006 | 18 | 49 |
| 2007 | 24 | 26 |
| 2008 | 20 | 42 |
| 2009 | 16 | 38 |
| 2010 | 25 | 52 |
| 2011 | 16 | 66 |
| 2012 | 17 | 58 |
| 2013 | 30 | 44 |
| 2014 | 37 | 62 |
| 2015 | 35 | 68 |
| 2016 | 38 | 70 |
| 2017 | 60 | 50 |
| 2018 | 50 | 74 |
| 2019 | 37 | 48 |
| 2020 | 62 | 43 |
| 2021 | 34 | 44 |
| 2022 | 42 | 40 |
| 2023 | 29 | 26 |
| 2024 | 29 | 27 |
| 2025 | 19 | 14 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dynamic insulation system for switchable building envelope25 Aug 2026US 12,716,232 B2The Regents of the University of Colorado, a body corporate
- Thermal storage system and method26 May 2026US 12,638,249 B2Other Lab, LLC
- Method and design of heat effective rotated packed bed24 Mar 2026US 12,582,955 B2Schlumberger Technology Corporation
- Hybrid evaporative-radiative cooling panels17 Mar 2026US 12,578,126 B2Massachusetts Institute of Technology
- 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
- Systems and methods for high energy density heat transfer5 Feb 2026US 2026/0036344 A1Solvcor Technologies LLC
- Atmospheric water generator apparatus23 Oct 2025US 2025/0325920 A1Exaeris Water Innovations, LLC
- Closed-loop refrigerant gas cooling device23 Oct 2025US 2025/0327599 A1Acme (Beijing) Technology Co., Ltd.
- Systems and methods for controlling and treating gas streams26 Jun 2025US 2025/0207790 A1Transaera, Inc.
- Absorption type chiller12 Jun 2025US 2025/0189178 A1
Most cited
By later US patents
- Thermoelectric power generation utilizing convective heat flow186US 6,598,405 B2Bsst LLC · 2003
- Sorption cooling process and system122US 5,802,870 AUop LLC · 1998
- Umbrella apparatus97US 6,612,713 B1World Factory, Inc. · 2003
- Solar powered heat reclamation air conditioning system90US 4,024,908 A1977
- Rotary thermodynamic apparatus and method84US 4,524,587 A1985