B04
Centrifugal apparatus or machines for carrying-out physical or chemical processes
B04 (Centrifugal apparatus or machines for carrying-out physical or chemical processes) appears on 6,885 US grants and 5,012 published applications in this corpus.
Search patents in B04- Granted patents
- 6,885
- Published applications
- 5,012
- Assignees
- 2,561
- Inventors
- 9,580
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 121 | 0 |
| 1977 | 102 | 0 |
| 1978 | 108 | 0 |
| 1979 | 103 | 0 |
| 1980 | 131 | 0 |
| 1981 | 148 | 0 |
| 1982 | 120 | 0 |
| 1983 | 112 | 0 |
| 1984 | 117 | 0 |
| 1985 | 93 | 0 |
| 1986 | 89 | 0 |
| 1987 | 131 | 0 |
| 1988 | 108 | 0 |
| 1989 | 122 | 0 |
| 1990 | 109 | 0 |
| 1991 | 89 | 0 |
| 1992 | 99 | 0 |
| 1993 | 106 | 0 |
| 1994 | 110 | 0 |
| 1995 | 88 | 0 |
| 1996 | 108 | 0 |
| 1997 | 106 | 0 |
| 1998 | 137 | 0 |
| 1999 | 152 | 0 |
| 2000 | 132 | 0 |
| 2001 | 140 | 34 |
| 2002 | 128 | 117 |
| 2003 | 133 | 127 |
| 2004 | 129 | 168 |
| 2005 | 96 | 146 |
| 2006 | 119 | 176 |
| 2007 | 98 | 134 |
| 2008 | 117 | 154 |
| 2009 | 101 | 153 |
| 2010 | 118 | 178 |
| 2011 | 144 | 168 |
| 2012 | 133 | 169 |
| 2013 | 127 | 184 |
| 2014 | 127 | 254 |
| 2015 | 179 | 239 |
| 2016 | 188 | 206 |
| 2017 | 174 | 246 |
| 2018 | 186 | 265 |
| 2019 | 226 | 282 |
| 2020 | 243 | 300 |
| 2021 | 257 | 253 |
| 2022 | 201 | 261 |
| 2023 | 192 | 232 |
| 2024 | 211 | 230 |
| 2025 | 180 | 187 |
| 2026 | 97 | 149 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subclasses
Granted patents
Recent patents
- Liquid processing fixture and device6 Oct 2026US 12,752,221 B2Triple Win Technology(Shenzhen) Co. Ltd.
- Inducer assembly for a turbine engine29 Sep 2026US 12,746,491 B2General Electric Company
- Vapor-liquid separator and systems including same29 Sep 2026US 12,747,897 B2Copeland Corporation
- Separator insert and separator22 Sep 2026US 12,741,288 B2GEA Westfalia Separator Group GmbH
- Transverse disc of a centrifuge screw, and solid-bowl screw centrifuge22 Sep 2026US 12,741,289 B2Flottweg SE
- Multi-cyclonic separator assembly8 Oct 2026US 2026/0307084 A1FMC Separation Systems, BV
- Treatment device8 Oct 2026US 2026/0307095 A1Toyota Shatai Kabushiki Kaisha
- Cleaning Device and Dust Collecting Method1 Oct 2026US 2026/0294188 A1Shenzhen Chenbei Technology Co., Ltd.
- Centrifuge syringe1 Oct 2026US 2026/0295575 A1Hubertus Goller Gesellschaft M.B.H.
- A method of operating a centrifugal separator1 Oct 2026US 2026/0295599 A1Alfa Laval Corporate AB
Most cited
By later US patents
- Process and apparatus for separating diluents from solid polymers utilizing a two-stage flash and a cyclone separator494US 5,575,979 APhillips Petroleum Company · 1996
- Vacuum cleaner having a cyclone type dust collecting apparatus333US 6,406,505 B1Samsung Kwangju Electronics Co., Ltd. · 2002
- Shroud330US 5,078,761 ANotetry Limited · 1992
- Method and apparatus for determining distribution of fluids317US 4,671,102 AShell Oil Company · 1987
- Plasma concentrate and tissue sealant methods and apparatuses for making concentrated plasma and/or tissue sealant316US 5,585,007 APlasmaseal LLC · 1996