Y02B 30/56
Heat recovery units
Y02B30/56 (Heat recovery units) appears on 885 US grants and 1,022 published applications in this corpus.
Search patents in Y02B- Granted patents
- 885
- Published applications
- 1,022
- Assignees
- 497
- Inventors
- 1,789
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 13 | 0 |
| 1983 | 17 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 15 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 10 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 13 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 14 | 8 |
| 2002 | 9 | 13 |
| 2003 | 10 | 21 |
| 2004 | 10 | 26 |
| 2005 | 16 | 28 |
| 2006 | 24 | 40 |
| 2007 | 16 | 28 |
| 2008 | 15 | 22 |
| 2009 | 12 | 28 |
| 2010 | 9 | 46 |
| 2011 | 11 | 54 |
| 2012 | 10 | 52 |
| 2013 | 19 | 54 |
| 2014 | 21 | 50 |
| 2015 | 24 | 39 |
| 2016 | 33 | 49 |
| 2017 | 39 | 51 |
| 2018 | 30 | 48 |
| 2019 | 37 | 47 |
| 2020 | 41 | 59 |
| 2021 | 39 | 49 |
| 2022 | 41 | 52 |
| 2023 | 44 | 62 |
| 2024 | 38 | 45 |
| 2025 | 43 | 32 |
| 2026 | 23 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing an exchanger element package for a vehicle8 Sep 2026US 12,729,875 B2Plastic Concept GmbH
- Closure unit for a ventilation device25 Aug 2026US 12,716,612 B2Viessmann Climate Solutions SE
- Laminate11 Aug 2026US 12,703,777 B2Daicel Corporation
- Heat exchanger water trap9 Jun 2026US 12,650,266 B2Knl Holding HjøRring Aps
- System and method for controlling ventilation air of a target space2 Jun 2026US 12,644,618 B2Lennox Industries Inc.
- Heat recovery ventilation unit with drainage27 Aug 2026US 2026/0251342 A1Zehnder Group International AG
- Ventilator20 Aug 2026US 2026/0243460 A1Daikin Industries, Ltd.
- Stacked structure, and heat-exchange-type ventilation device and air purification device using same13 Aug 2026US 2026/0235318 A1Panasonic Intellectual Property Management Co., Ltd.
- A drain system and a shower or shower cabin23 Jul 2026US 2026/0210562 A1Enduce AB
- Intelligent networked energy recovery ventilator16 Jul 2026US 2026/0202081 A1Microjet Technology Co., Ltd.
Most cited
By later US patents
- Dri-Pc humidity and temperature controller164US 4,841,733 A1989
- System and method for controlling temperature and humidity132US 6,199,388 B1Semco LLC · 2001
- Ventilating dehumidifying system123US 6,575,228 B1Mississippi State Research and Technology Corporation · 2003
- Desiccant assisted dehumidification and cooling system114US 5,579,647 AEngelhard/ICC · 1996
- Apparatus suited for ventilating rooms contaminated with infectious disease organisms114US 5,761,908 AAir Quality Engineering · 1998