B04C 5/10
With perforated walls
Official title: with perforated walls
B04C5/10 (With perforated walls) appears on 100 US grants and 52 published applications in this corpus.
Search patents in B04C- Granted patents
- 100
- Published applications
- 52
- Assignees
- 65
- Inventors
- 173
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 0 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 3 | 6 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 1 | 0 |
| 2016 | 2 | 3 |
| 2017 | 2 | 4 |
| 2018 | 2 | 3 |
| 2019 | 6 | 3 |
| 2020 | 1 | 0 |
| 2021 | 5 | 6 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sand knockout for fracking fluids28 Apr 2026US 12,611,680 B2Bestway Oilfield, Inc.
- Aerated hydrocyclone apparatus and method for cyclonic froth separation18 Mar 2025US 12,251,718 B2
- Extracting essential oils15 Oct 2024US 12,116,547 B2
- Cyclonic separation device and application thereof13 Aug 2024US 12,059,120 B2Jiangsu Midea Cleaning Appliances Co., Ltd.
- Extracting essential oils8 Aug 2023US 11,718,811 B2
- Sand Knockout for Fracking Fluids2 Oct 2025US 2025/0303426 A1Bestway Oilfield, Inc.
- Aerated hydrocyclone apparatus and method for cyclonic froth separation3 Jul 2025US 2025/0214092 A1
- Extracting essential oils13 Mar 2025US 2025/0084340 A1Innovative Vortex Technologies LLC
- Gas extractor providing active fluid transport and circulation9 May 2024US 2024/0149281 A1Surface Logging Solutions, LLC
- Extracting essential oils19 Oct 2023US 2023/0332068 A1
Most cited
By later US patents
- Handheld cleaning appliance235US 8,156,609 B2Dyson Technology Limited · 2012
- Air-sparged hydrocyclone and method141US 4,279,743 AUniversity of Utah · 1981
- Handheld cleaning appliance130US 8,444,731 B2Dyson Technology Limited · 2013
- Cyclone inlet flow diverter for separator vessels114US 4,778,494 AAtlantic Richfield Company · 1988
- Cyclonic separating apparatus93US 7,628,831 B2Dyson Technology Limited · 2009