Patents by Inventor Iosif Shmidt

Iosif Shmidt 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).

  • Process for controlling the permeate composition in a rotary filtration device
    Patent number: 4911847
    Abstract: An improved method and apparatus for filtration includes an outer stationary body, an inner rotating body defining a gap with the outer body for receiving a fluid sample, the surface of one of the bodies defining the gap being a filter. The rotation of the inner body creates Taylor vortices which continuously displace occluded solute on the filter surface. The filter can be a membrane. The rotational speed and/or a driving force across the membrane may be varied to control the composition of the permeate.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: March 27, 1990
    Assignee: Membrex, Inc.
    Inventors: Iosif Shmidt, Mario Badiali
  • Small volume rotary filter
    Patent number: 4876013
    Abstract: An improved method and apparatus for filtration includes an outer stationary body, an inner rotating body defining a gap with the outer body for receiving a fluid sample, the surface of one of the bodies defining the gap being a filter. The rotation of the inner body creates Taylor vortices which continuously displace occluded solute on the filter surface. The filter can be a membrane. In one embodiment the device may be used to filter very small volumes of fluid such as are handled in clinical and other laboratories.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: October 24, 1989
    Assignee: Membrex Incorporated
    Inventors: Iosif Shmidt, Mario Badiali
  • Filtration method and apparatus
    Patent number: 4790942
    Abstract: An improved method and apparatus for filtration includes an outer stationary body, an inner rotating body defining a gap with the outer body for receiving a fluid sample, the surface of one of the bodies defining the gap being a filter. The rotation of the inner body creates Taylor vortices which continuously displace occluded solute on the filter surface. The filter can be a membrane.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: December 13, 1988
    Assignee: Membrex Incorporated
    Inventors: Iosif Shmidt, Mario Badiali