Patents by Inventor Volker Graeff

Volker Graeff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6982064
    Abstract: Known static micromixers that work according to the principle of multilamination allow for a rapid mixing by diffusion. The invention provides a means for substantially increasing the throughput of known micromixers. To this end, the inventive micromixer for mixing two or more reactants comprises microstructures that define mixer cells. Each of said mixer cells is provided with a feeding chamber which adjoins at least two groups of digital channels. Said channels intermesh with the digital channels of the groups adjoining the feeding channels in a comb-like manner, thereby producing mixing zones]. Outlet ports are located above said mixing zones, said outlet ports extending perpendicularly to the digital channels and discharging the product. The inventive micromixer is especially useful for the large-scale production of mixtures, dispersions and emulsions.
    Type: Grant
    Filed: June 10, 2000
    Date of Patent: January 3, 2006
    Assignee: Institut fur Mikrotechnik Mainz GmbH
    Inventors: Wolfgang Ehrfeld, Frank Michel, Astrid Lohf, Volker Graeff
  • Patent number: 6484582
    Abstract: A rolling bearing which has as rolling bearing components one bearing race with a first running surface, a second bearing race with a second running surface opposed to the first surface, and rolling elements arranged between the running surfaces. At least one sensing unit is integrated into the rolling bearing components. The sensing unit can be interrogated by radio via antennas or can be connected to an interrogator by a cable. The sensing unit uses at least one component operating on the SAW or BAW principle to sense changes in length and/or changes in temperature in the material of the rolling bearing component and sends the result of the measurement after the arrival of a radio signal via the antenna or via a cable.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: November 26, 2002
    Assignees: FAG OEM und Handel AG, Institut fur Mikrotechnik Mainz GmbH
    Inventors: Wolfgang Ehrfeld, Volker Graeff, Frank Michel, Sven Gempper, Jens Heim, Joachim Hering, Horst Masuch, Edgar Streit, Vasilis Hassiotis, Henri Van Der Knokke
  • Publication number: 20020062694
    Abstract: A rolling bearing which has as rolling bearing components one bearing race with a first running surface, a second bearing race with a second running surface opposed to the first surface, and rolling elements arranged between the running surfaces. At least one sensing unit is integrated into the rolling bearing components. The sensing unit can be interrogated by radio via antennas or can be connected to an interrogator by a cable. The sensing unit uses at least one component operating on the SAW or BAW principle to sense changes in length and/or changes in temperature in the material of the rolling bearing component and sends the result of the measurement after the arrival of a radio signal via the antenna or via a cable.
    Type: Application
    Filed: April 10, 2001
    Publication date: May 30, 2002
    Applicant: FAG OEM und Handel AG
    Inventors: Wolfgang Ehrfeld, Volker Graeff, Frank Michel, Sven Gempper, Jens Heim, Joachim Hering, Horst Masuch, Edgar Streit, Vasilis Hassiotis, Henri Van Der Knokke