B04C 9/00
Combinations with other devices
Official title: Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00)
B04C9/00 (Combinations with other devices) appears on 849 US grants and 807 published applications in this corpus.
Search patents in B04C- Granted patents
- 849
- Published applications
- 807
- Assignees
- 519
- Inventors
- 1,534
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 15 | 0 |
| 1982 | 12 | 0 |
| 1983 | 11 | 0 |
| 1984 | 13 | 0 |
| 1985 | 4 | 0 |
| 1986 | 14 | 0 |
| 1987 | 17 | 0 |
| 1988 | 15 | 0 |
| 1989 | 17 | 0 |
| 1990 | 8 | 0 |
| 1991 | 15 | 0 |
| 1992 | 9 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 5 |
| 2002 | 13 | 6 |
| 2003 | 9 | 13 |
| 2004 | 9 | 14 |
| 2005 | 10 | 22 |
| 2006 | 10 | 20 |
| 2007 | 11 | 19 |
| 2008 | 10 | 14 |
| 2009 | 12 | 22 |
| 2010 | 15 | 22 |
| 2011 | 24 | 22 |
| 2012 | 18 | 20 |
| 2013 | 14 | 16 |
| 2014 | 12 | 25 |
| 2015 | 24 | 26 |
| 2016 | 22 | 34 |
| 2017 | 19 | 36 |
| 2018 | 26 | 58 |
| 2019 | 41 | 75 |
| 2020 | 61 | 80 |
| 2021 | 58 | 46 |
| 2022 | 52 | 56 |
| 2023 | 40 | 51 |
| 2024 | 48 | 44 |
| 2025 | 31 | 29 |
| 2026 | 15 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B04C 2009/004Combinations with other devices: with internal filters, in the cyclone chamber orIndexing code246
- B04C 2009/002Combinations with other devices: with external filtersIndexing code218
- B04C 2009/005Combinations with other devices: with external rotorsIndexing code132
- B04C 2009/007Combinations with other devices: with internal rotorsIndexing code104
- B04C 2009/008Combinations with other devices: with injection or suction of gas or liquidIndexing code101
- B04C 2009/001Combinations with other devices: with means for electrostatic separationIndexing code45
Recent patents
- Surface cleaning apparatus8 Sep 2026US 12,727,731 B2Omachron Intellectual Property Inc.
- Low profile bucket lid and dust cyclone25 Aug 2026US 12,714,274 B2Oneida Air Systems, Inc.
- Vapor displacement refueling including data communications, zero gravity and chemical looping combustion system25 Aug 2026US 12,718,682 B2
- Dewatering method and system18 Aug 2026US 12,709,562 B2Weir Minerals Australia Ltd.
- Cyclone separator and dishwasher4 Aug 2026US 12,697,628 B2Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.
- Cleaning Device and Dust Collecting Method1 Oct 2026US 2026/0294188 A1Shenzhen Chenbei Technology Co., Ltd.
- Filter device for removing particles from a fluid1 Oct 2026US 2026/0295603 A1Mst Nl B.V.
- Cleaner1 Oct 2026US 2026/0295604 A1LG Electronics Inc.
- Surface cleaning apparatus24 Sep 2026US 2026/0283435 A1Omachron Intellectual Property Inc.
- Separator for a fluid cleaning device24 Sep 2026US 2026/0284678 A1Dyson Technology Limited
Most cited
By later US patents
- Upright vacuum cleaner with cyclonic air flow295US 6,782,585 B1Fantom Technologies Inc. · 2004
- Cyclonic vacuum cleaner ribbed cyclone shroud238US 7,922,794 B2Electrolux Home Care Products, Inc. · 2011
- Handheld cleaning appliance235US 8,156,609 B2Dyson Technology Limited · 2012
- Vacuum cleaner and cyclone module therefor170US 8,062,398 B2BISSELL Homecare, Inc. · 2011
- Upright vacuum cleaner with cyclonic air flow152US 6,070,291 ARoyal Appliance Mfg. Co. · 2000