B04B
Centrifuges
Official title: CENTRIFUGES (high-speed drum mills B02C19/11; domestic spin driers D06F; analysing, measuring or monitoring physical or chemical properties of samples during centrifuging, see the relevant subclasses for these procedures, e.g. G01N)
B04B (Centrifuges) appears on 4,352 US grants and 3,001 published applications in this corpus.
Search patents in B04B- Granted patents
- 4,352
- Published applications
- 3,001
- Assignees
- 1,409
- Inventors
- 5,555
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 94 | 0 |
| 1977 | 81 | 0 |
| 1978 | 85 | 0 |
| 1979 | 67 | 0 |
| 1980 | 93 | 0 |
| 1981 | 93 | 0 |
| 1982 | 86 | 0 |
| 1983 | 78 | 0 |
| 1984 | 80 | 0 |
| 1985 | 68 | 0 |
| 1986 | 46 | 0 |
| 1987 | 78 | 0 |
| 1988 | 65 | 0 |
| 1989 | 73 | 0 |
| 1990 | 69 | 0 |
| 1991 | 46 | 0 |
| 1992 | 57 | 0 |
| 1993 | 65 | 0 |
| 1994 | 77 | 0 |
| 1995 | 60 | 0 |
| 1996 | 87 | 0 |
| 1997 | 85 | 0 |
| 1998 | 111 | 0 |
| 1999 | 108 | 0 |
| 2000 | 97 | 0 |
| 2001 | 95 | 16 |
| 2002 | 85 | 88 |
| 2003 | 85 | 82 |
| 2004 | 84 | 114 |
| 2005 | 58 | 80 |
| 2006 | 90 | 99 |
| 2007 | 63 | 72 |
| 2008 | 62 | 92 |
| 2009 | 49 | 81 |
| 2010 | 63 | 102 |
| 2011 | 79 | 114 |
| 2012 | 79 | 104 |
| 2013 | 69 | 124 |
| 2014 | 80 | 165 |
| 2015 | 107 | 149 |
| 2016 | 122 | 123 |
| 2017 | 100 | 153 |
| 2018 | 116 | 143 |
| 2019 | 137 | 143 |
| 2020 | 123 | 158 |
| 2021 | 138 | 152 |
| 2022 | 102 | 152 |
| 2023 | 112 | 142 |
| 2024 | 131 | 146 |
| 2025 | 116 | 124 |
| 2026 | 58 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B04B 5/00Centrifuges: other centrifuges2,248
- B04B 1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid1,221
- B04B 7/00Elements of centrifuges1,066
- B04B 11/00Feeding, charging, or discharging bowls1,020
- B04B 9/00Drives specially designed for centrifuges786
- B04B 13/00Control arrangements specially designed for centrifuges551
- B04B 15/00Centrifuges: other accessories for centrifuges463
- B04B 3/00Centrifuges with rotary bowls in which solid particles or bodies become separated387
Recent patents
- Liquid processing fixture and device6 Oct 2026US 12,752,221 B2Triple Win Technology(Shenzhen) Co. Ltd.
- 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
- System and method for creating cell processing protocols15 Sep 2026US 12,734,284 B2Haemonetics Corporation
- Gas separation device system using waveform disks15 Sep 2026US 12,734,477 B2
- 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
- A centrifugal separator1 Oct 2026US 2026/0295600 A1Alfa Laval Corporate AB
- A method for controlling an electric motor of a centrifugal separator1 Oct 2026US 2026/0295601 A1Alfdex AB
- Portable Centrifuge with Vibration Dampening1 Oct 2026US 2026/0295602 A1ABC Med Tech Corp.
Most cited
By later US patents
- 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
- Automated sample processing system including automatic centrifuge device289US 6,060,022 ABeckman Coulter, Inc. · 2000
- Plasmapheresis apparatus284US 4,086,924 AHaemonetics Corporation · 1978
- Apparatus for separating blood into components thereof257US 4,303,193 AHaemonetics Corporation · 1981