B01D 46/22
The belts travelling during filtering
Official title: the belts travelling during filtering
B01D46/22 (The belts travelling during filtering) appears on 40 US grants and 31 published applications in this corpus.
Search patents in B01D- Granted patents
- 40
- Published applications
- 31
- Assignees
- 26
- Inventors
- 74
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 2 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 2 | 3 |
| 2013 | 2 | 2 |
| 2014 | 2 | 5 |
| 2015 | 1 | 1 |
| 2016 | 4 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filtration device, filtration method and filtration filter14 Apr 2026US 12,599,854 B2Murata Manufacturing Co., Ltd.
- Exhaust gas emission circulation filtering apparatus for air pollution prevention16 Dec 2025US 12,496,545 B2Welter’s Co., Ltd.
- Air filter device of industrial machine19 Mar 2024US 11,931,680 B2Fanuc Corporation
- Automatic clean air filter for air conditioner unit12 Apr 2022US 11,298,638 B2Haier US Appliance Solutions, Inc.
- Direct replacement air filter with automatic pleated filter media advance14 Mar 2017US 9,592,466 B2
- Prefiltration structure for filter element and air purifier23 Oct 2025US 2025/0325932 A1Shenzhen Beibanqiu Network Technology Co., Ltd.
- Exhaust Gas Emission Circulation Filtering Apparatus for Air Pollution Prevention7 Nov 2024US 2024/0367083 A1Welter’s Co., Ltd.
- Dual filtration and auto cleansing mechanism5 Oct 2023US 2023/0311050 A1Carrier Corporation
- Automatic clean air filter for air conditioner unit8 Jul 2021US 2021/0205742 A1Haier US Appliance Solutions, Inc.
- Air filter device of industrial machine29 Oct 2020US 2020/0338491 A1Fanuc Corporation
Most cited
By later US patents
- Filter system with automatic media refresh96US 7,186,290 B2Carrier Corporation · 2007
- Air filtration system41US 6,063,170 AAir Medic, Inc. · 2000
- Method of and a device for separating paint residuals and solvents from the exhaust air of a paint spray chamber28US 4,257,783 AOtto Durr Anlagenbau GmbH · 1981
- Pleated belt filter with suction means to remove debris28US 5,560,835 APneumafil Corporation · 1996
- Moving filter system for air-powder separation in an electrostatic powder spray system25US 4,153,008 AInterrad Corporation · 1979