Separation of liquids, not provided for elsewhere

Official title: Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion (devices for separating or removing fatty or oily substances or similar floating material from water, waste water, or sewage C02F1/40; cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; arrangements for separating lubricants from refrigerants F25B43/02)

B01D17/00 (Separation of liquids, not provided for elsewhere) appears on 5,003 US grants and 3,590 published applications in this corpus.