Article: Industry patents: the patent is a legal document giving the holder a license to capitalize on the invention without competition for a few years. In exchange, the holder teaches the basis of the invention.

Static Mixers

U.S. Patent 7,390,121 (June 24, 2008), "Static Mixer Module," Peter Jahn, Helmut Brod, and Klemens Kohlgruber (Bayer AG, Leverkusen, Germany)

Static mixers use straightforward mixing processes based on dividing and recombining linear flows. However, problems can arise involving dwell times, high pressure gradients, and structure. Jahn et at. have developed a static mixer module based on a disc that has holes with front input channels and rear mixing channels. These simple modules can be conveniently assembled in series for optimal mixing. Rotation of adjacent modules prevents the development of preferred flow channels.

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