F26B 23/005
Using a closed cycle heat pump system
Official title: {using a closed cycle heat pump system (with recycling of drying medium F26B21/333); using a heat pipe system}
F26B23/005 (Using a closed cycle heat pump system) appears on 57 US grants and 48 published applications in this corpus.
Search patents in F26B- Granted patents
- 57
- Published applications
- 48
- Assignees
- 51
- Inventors
- 146
- Latest grant
- 29 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 3 |
| 2016 | 1 | 2 |
| 2017 | 2 | 3 |
| 2018 | 1 | 0 |
| 2019 | 2 | 7 |
| 2020 | 4 | 1 |
| 2021 | 5 | 2 |
| 2022 | 3 | 2 |
| 2023 | 0 | 1 |
| 2024 | 4 | 5 |
| 2025 | 0 | 5 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat pump drying system29 Oct 2024US 12,130,082 B2
- Heat pump closed loop process drying29 Oct 2024US 12,130,083 B1
- Combined refrigeration and heating devices for food industry and use methods thereof22 Oct 2024US 12,121,048 B2Hefei University of Technology
- Method and system of thermo-vacuum drying and processing30 Jan 2024US 11,885,563 B2Utilization Technology Development, Nfp
- Control method and control device for variable-frequency and variable-capacity heat pump hot-air drying system24 May 2022US 11,339,994 B2Jiangsu Tenesun Electrical Appliance Co., Ltd.
- Method for managing a dehydration system and corresponding dehydration system20 Aug 2026US 2026/0243511 A1Lgd
- Heat Recuperation In Gypsum Board Drying Process11 Jun 2026US 2026/0160493 A1Gyptech AB
- A spray dryer arrangement and a method of controlling such an arrangement14 May 2026US 2026/0132985 A1Munters Netherlands B.V.
- Vacuum Condensing Dryer with Heat Pump23 Apr 2026US 2026/0110483 A1LG Chem.Ltd.
- Method for Recovering Heat From a Drying Device for Building Boards22 Jan 2026US 2026/0022887 A1Knauf Gips KG
Most cited
By later US patents
- Closed-loop drying process and system100US 5,343,632 AAdvanced Dryer Systems, Inc. · 1994
- Heat pump closed loop drying80US 4,603,489 A1986
- Heat pump grain dryer52US 4,337,584 A1982
- Dryer apparatus having an improved air circulation50US 4,471,537 AIndesit Industria Elettrodomestici Italiana S.p.A. · 1984
- Heat pump freeze drying system46US 4,016,657 A1977