B01D 46/448
By temperature measuring
Official title: {by temperature measuring}
B01D46/448 (By temperature measuring) appears on 154 US grants and 200 published applications in this corpus.
Search patents in B01D- Granted patents
- 154
- Published applications
- 200
- Assignees
- 138
- Inventors
- 479
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 1 |
| 2004 | 2 | 6 |
| 2005 | 5 | 3 |
| 2006 | 1 | 2 |
| 2007 | 2 | 6 |
| 2008 | 1 | 3 |
| 2009 | 3 | 6 |
| 2010 | 1 | 2 |
| 2011 | 1 | 8 |
| 2012 | 3 | 2 |
| 2013 | 6 | 8 |
| 2014 | 3 | 0 |
| 2015 | 4 | 3 |
| 2016 | 3 | 6 |
| 2017 | 3 | 17 |
| 2018 | 5 | 8 |
| 2019 | 8 | 15 |
| 2020 | 14 | 24 |
| 2021 | 12 | 18 |
| 2022 | 14 | 23 |
| 2023 | 11 | 13 |
| 2024 | 14 | 9 |
| 2025 | 13 | 11 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Indoor air cleaning system8 Sep 2026US 12,729,868 B2Microjet Technology Co., Ltd.
- Method and system for detecting and quantifying regeneration events in a diesel particulate filter5 May 2026US 12,618,354 B2Intangles Lab Pvt. Ltd.
- Frame for collapsible and foldable pleated disposable air filter with differential pressure sensor and communication capability7 Apr 2026US 12,594,516 B2Woosh Air Inc.
- Air purification apparatus7 Apr 2026US 12,594,518 B2Khanfilter, Inc.
- Fresh air ventilation device for air pollution prevention17 Mar 2026US 12,578,108 B2Microjet Technology Co., Ltd.
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Smart multifunction air purification and ventilation9 Jul 2026US 2026/0194247 A1Nature's Cooling Solutions
- Indoor field intelligent cleaning system25 Jun 2026US 2026/0177263 A1Microjet Technology Co., Ltd.
- Intelligent networked exhaust fan4 Jun 2026US 2026/0153259 A1Microjet Technology Co., Ltd.
- Positive pressure control method of indoor air cleaning network mechanism system19 Feb 2026US 2026/0049728 A1Microjet Technology Co., Ltd.
Most cited
By later US patents
- Thermal management system73US 6,319,114 B1Degree Controls, Inc. · 2001
- Filter condition sensor and indicator70US 5,668,535 AEmerson Electric Co. · 1997
- Automated filter changing device and method70US 6,596,059 B1Skyline Products, Inc. · 2003
- Filter monitoring system using a thermistor68US 6,507,282 B1The Holmes Group, Inc. · 2003
- Apparatus and method for detecting a plugged air filter on an engine45US 5,604,306 ACaterpillar Inc. · 1997