B01D 46/681
By scrapers, brushes or the like
Official title: by scrapers, brushes or the like
B01D46/681 (By scrapers, brushes or the like) appears on 136 US grants and 185 published applications in this corpus.
Search patents in B01D- Granted patents
- 136
- Published applications
- 185
- Assignees
- 85
- Inventors
- 377
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 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 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 3 | 5 |
| 2005 | 1 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 5 |
| 2008 | 1 | 2 |
| 2009 | 2 | 7 |
| 2010 | 2 | 15 |
| 2011 | 4 | 14 |
| 2012 | 4 | 4 |
| 2013 | 4 | 0 |
| 2014 | 6 | 4 |
| 2015 | 2 | 5 |
| 2016 | 4 | 6 |
| 2017 | 6 | 6 |
| 2018 | 6 | 17 |
| 2019 | 12 | 12 |
| 2020 | 5 | 9 |
| 2021 | 10 | 12 |
| 2022 | 13 | 14 |
| 2023 | 10 | 8 |
| 2024 | 7 | 13 |
| 2025 | 10 | 14 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Filter device for vacuum cleaner45US 7,494,520 B2LG Electronics Inc. · 2009
- Filter cleaning device of cyclone vacuum cleaner44US 7,074,248 B2Samsung Gwangju Electronics Co., Ltd. · 2006
- Drainage device comprising a filter cleaning device40US 9,789,290 B22017
- Rotating filter feature for wet/dry vacuum cleaner34US 6,758,874 B12004
- Air cleaner and controlling method thereof28US 8,951,319 B2LG Electronics Inc. · 2015