B04C 5/28
For parallel flow
Official title: for parallel flow
B04C5/28 (For parallel flow) appears on 350 US grants and 298 published applications in this corpus.
Search patents in B04C- Granted patents
- 350
- Published applications
- 298
- Assignees
- 177
- Inventors
- 519
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 4 | 6 |
| 2004 | 4 | 5 |
| 2005 | 5 | 8 |
| 2006 | 2 | 9 |
| 2007 | 3 | 7 |
| 2008 | 8 | 10 |
| 2009 | 6 | 13 |
| 2010 | 8 | 12 |
| 2011 | 10 | 5 |
| 2012 | 5 | 10 |
| 2013 | 7 | 8 |
| 2014 | 12 | 15 |
| 2015 | 8 | 9 |
| 2016 | 11 | 17 |
| 2017 | 9 | 15 |
| 2018 | 13 | 27 |
| 2019 | 19 | 26 |
| 2020 | 26 | 24 |
| 2021 | 19 | 17 |
| 2022 | 18 | 16 |
| 2023 | 13 | 14 |
| 2024 | 10 | 7 |
| 2025 | 7 | 4 |
| 2026 | 4 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compact disc stack cyclone separator19 May 2026US 12,629,701 B2
- Multi-stage circulating separation equipment28 Apr 2026US 12,612,318 B2
- Air treatment apparatus24 Feb 2026US 12,558,697 B2Omachron Intellectual Property Inc.
- Hydro-cyclone system13 Jan 2026US 12,521,735 B2Voith Patent GmbH
- Slurry cleaner systems with cleaner dilution devices and methods of cleaning slurries therewith23 Sep 2025US 12,421,661 B2Kadant Black Clawson LLC
- Air treatment apparatus1 Oct 2026US 2026/0295605 A1Omachron Intellectual Property Inc.
- Compact disc stack cyclone separator20 Aug 2026US 2026/0241395 A1
- Vacuum cleaner13 Aug 2026US 2026/0232155 A1LG Electronics Inc.
- Dust collecting apparatus, vacuum cleaner, and cleaning apparatus16 Jul 2026US 2026/0198738 A1Samsung Electronics Co., Ltd.
- Cyclonic Separator System with a Bypass Conduit16 Jul 2026US 2026/0199909 A1
Most cited
By later US patents
- Upright vacuum cleaner with cyclonic air flow295US 6,782,585 B1Fantom Technologies Inc. · 2004
- Cyclonic array such as for a vacuum cleaner192US 7,867,308 B2G. B. D. Corp. · 2011
- Dirt container for a surface cleaning apparatus and method of use146US 7,329,294 B2Polar Light Limited · 2008
- Configuration of a cyclone assembly and surface cleaning apparatus having same125US 7,941,895 B2G. B. D. Corp. · 2011
- Cyclone separating device of a cleaner98US 8,101,001 B22012