B01D 46/0086
Filter condition indicators
Official title: {Filter condition indicators}
B01D46/0086 (Filter condition indicators) appears on 781 US grants and 901 published applications in this corpus.
Search patents in B01D- Granted patents
- 781
- Published applications
- 901
- Assignees
- 450
- Inventors
- 1,963
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 17 | 6 |
| 2002 | 16 | 16 |
| 2003 | 16 | 14 |
| 2004 | 18 | 26 |
| 2005 | 17 | 16 |
| 2006 | 11 | 23 |
| 2007 | 14 | 39 |
| 2008 | 17 | 17 |
| 2009 | 18 | 21 |
| 2010 | 18 | 23 |
| 2011 | 16 | 27 |
| 2012 | 18 | 27 |
| 2013 | 18 | 22 |
| 2014 | 18 | 29 |
| 2015 | 26 | 40 |
| 2016 | 28 | 54 |
| 2017 | 43 | 54 |
| 2018 | 35 | 53 |
| 2019 | 35 | 52 |
| 2020 | 59 | 60 |
| 2021 | 51 | 69 |
| 2022 | 37 | 51 |
| 2023 | 44 | 47 |
| 2024 | 38 | 50 |
| 2025 | 42 | 34 |
| 2026 | 31 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Insufflator with filter loading detection device22 Sep 2026US 12,741,106 B2Novanta Medical GmbH
- Control of evacuation stations8 Sep 2026US 12,727,729 B2iRobot Corporation
- System for reducing atmospheric pollution generated in printing house, and operation method therefor1 Sep 2026US 12,722,110 B2The Seoul Institute
- Method for calculating filter load estimation, system for cleaning environmental air, and vehicle comprising same25 Aug 2026US 12,714,962 B2MANN+HUMMEL Ventures Pte. Ltd.
- Method to check a coffee beans roasting system11 Aug 2026US 12,702,151 B2Societe des Produits Nestle S. A.
- Air cleaner8 Oct 2026US 2026/0309347 A1LG Electronics Inc.
- Air filtration system with main and subsidiary assemblies1 Oct 2026US 2026/0295493 A1Apex Brands, Inc.
- Air filter with coupled sample collection/analysis27 Aug 2026US 2026/0249222 A1Kappa Filter Systems GmbH
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Vacuum cleaner20 Aug 2026US 2026/0240393 A1
Most cited
By later US patents
- Air filtration system with filter efficiency management373US 6,391,102 B1Stackhouse, Inc. · 2002
- Dual mode laser smoke evacuation system with sequential filter monitor and vacuum compensation360US 5,242,474 ASorenson Laboratories, Inc. · 1993
- Air cleaner having sealing arrangement between media arrangement and housing342US 6,179,890 B2Donaldson Company, Inc. · 2001
- Smoke evacuator system for use in laser surgery336US 4,701,193 AXanar, Inc. · 1987
- Smoke plume evacuation filtration system295US 6,585,791 B12003