F24F 2221/225
Using a liquid
Official title: using a liquid
F24F2221/225 (Using a liquid) appears on 75 US grants and 93 published applications in this corpus.
Search patents in F24F- Granted patents
- 75
- Published applications
- 93
- Assignees
- 42
- Inventors
- 149
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 3 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 5 | 0 |
| 2017 | 0 | 6 |
| 2018 | 4 | 6 |
| 2019 | 6 | 2 |
| 2020 | 4 | 7 |
| 2021 | 4 | 7 |
| 2022 | 3 | 8 |
| 2023 | 9 | 10 |
| 2024 | 8 | 10 |
| 2025 | 13 | 6 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve assembly for AC condensate line22 Sep 2026US 12,742,568 B2
- HVAC/R system contaminant removal solvent having N-propanol and flame suppresion additives, and method for flushing HVAC systems using the solvent2 Jun 2026US 12,644,078 B1Mainstream Engineering Corporation
- Toolless installation and cleaning of vent assembly12 May 2026US 12,624,857 B2Filtrex Pure Air, LLC
- Method for cleaning an evaporative humidifier and cooler apparatus and a system comprising an evaporative humidifier and cooler apparatus21 Oct 2025US 12,449,146 B2Munters Europe Aktiebolag
- Cleaner apparatus7 Oct 2025US 12,434,276 B2Iflo LLC
- Liquid water source collection apparatus, air conditioner, control method20 Aug 2026US 2026/0243464 A1Shenzhen Roborock Innovation Technology Co., Ltd.
- Air conditioning device, method for controlling air conditioning device, and storage medium30 Jul 2026US 2026/0218938 A1Shenzhen Roborock Innovation Technology Co., Ltd.
- Air conditioner cleaning device23 Jul 2026US 2026/0207804 A1
- Entity identification using machine learning4 Jun 2026US 2026/0154984 A1TidalX AI Inc.
- Hvac drain line and pan cleaning system and method16 Apr 2026US 2026/0104177 A1Ocd Innovations, LLC
Most cited
By later US patents
- Self-washing coil for air conditioning units33US 6,318,108 B12001
- Collection pan treatment apparatus33US 6,487,867 B12002
- Dispensing system and method for dispensing a concentrated product and container for use therewith28US 6,105,638 AEcolab Inc. · 2000
- Duct cleaning apparatus24US 5,072,487 AJ. F. Walton & Co., Inc. · 1991
- Condensate drip pan decontaminant device21US 6,892,907 B22005