F25B 2313/006
Two pipes connecting the outdoor side to the indoor side with multiple
Official title: two pipes connecting the outdoor side to the indoor side with multiple indoor units
F25B2313/006 (Two pipes connecting the outdoor side to the indoor side with multiple) appears on 228 US grants and 281 published applications in this corpus.
Search patents in F25B- Granted patents
- 228
- Published applications
- 281
- Assignees
- 37
- Inventors
- 415
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 6 |
| 2004 | 4 | 3 |
| 2005 | 2 | 5 |
| 2006 | 2 | 7 |
| 2007 | 4 | 2 |
| 2008 | 3 | 2 |
| 2009 | 2 | 10 |
| 2010 | 1 | 10 |
| 2011 | 3 | 20 |
| 2012 | 5 | 25 |
| 2013 | 5 | 11 |
| 2014 | 12 | 16 |
| 2015 | 15 | 42 |
| 2016 | 16 | 22 |
| 2017 | 25 | 20 |
| 2018 | 31 | 9 |
| 2019 | 25 | 12 |
| 2020 | 15 | 19 |
| 2021 | 7 | 10 |
| 2022 | 16 | 10 |
| 2023 | 4 | 6 |
| 2024 | 11 | 7 |
| 2025 | 4 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Outdoor unit for air conditioning and air conditioner20 Aug 2026US 2026/0243449 A1Carrier Japan Corporation
- Air-conditioning apparatus and evacuation method in air-conditioning apparatus20 Aug 2026US 2026/0243474 A1Mitsubishi Electric Corporation
- Air conditioner30 Jul 2026US 2026/0218955 A1Daikin Industries, Ltd.
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Most cited
By later US patents
- Air-conditioning system39US 5,388,422 AMitsubishi Denki Kabushiki Kaisha · 1995
- Air conditioning system37US 5,142,879 AMitsubishi Denki Kabushiki Kaisha · 1992
- Air-conditioning system28US 5,237,833 AMitsubishi Denki Kabushiki Kaisha · 1993
- Refrigeration apparatus25US 5,526,649 ADaikin Industries, Ltd. · 1996
- Thermo-charger for multiplex air conditioning system23US 4,760,707 ACarrier Corporation · 1988