B04B 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)
Description
B04B covers centrifuge machines and apparatus designed to separate substances or materials using centrifugal force. This subclass encompasses various centrifuge types including laboratory, industrial, and continuous-operation models used for solid-liquid separation, liquid-liquid separation, and particle classification across chemical, pharmaceutical, food processing, and environmental applications. Related mechanical components such as rotors, bowls, baskets, and drive systems integral to centrifuge operation are included within this classification. Adjacent classes B04C (auxiliary equipment for centrifuges) and broader class B04 (centrifugal apparatus for physical/chemical processes) provide complementary coverage for supporting equipment and non-centrifuge centrifugal machines.
8 direct subcodes
Child Classifications
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- B04B 1/00 Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B 11/00 Feeding, charging, or discharging bowls (B04B1/00, B04B3/00, B04B7/04 take precedence)
- B04B 13/00 Control arrangements specially designed for centrifuges; Program control of centrifuges (control arrangements for feed, charge or discharge B04B11/00)
- B04B 15/00 Other accessories for centrifuges
- B04B 3/00 Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
- B04B 5/00 Other centrifuges
- B04B 7/00 Elements of centrifuges (drives B04B9/00; feeding, charging, or discharging appurtenances or devices B04B11/00)
- B04B 9/00 Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
Top Applicants
Top 10 applicants by patent filingsfor class B04, 2013–2023, worldwide · Source: EPO PATSTAT
- ALFA LAVAL SE 576
- GEA MECHANICAL EQUIPMENT DE 304
- DYSON GB 221
- LG ELECTRONICS KR 151
- GEA WESTFALIA SEPARATOR GROUP DE 138
- FLOTTWEG SE DE 129
- FENWAL US 114
- BECTON, DICKINSON & COMPANY US 112
- ANDREAS HETTICH & COMPANY DE 109
- OMACHRON INTELLECTUAL PROPERTY CA 108