Patents by Inventor Robert G. Sandberg

Robert G. Sandberg 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: 6165519
    Abstract: A filter for the adsorption of ingredients from and/or the dispersion of ingredients into a fluid includes a matrix which has a plurality of particles having an inherently active surface or an active surface made of a fluid treating material. The particles are held in place by a moderately viscous binder which is impervious to the flow of the fluid. The particles, however, are made of a fluid pervious material. An insufficient amount of binder is incorporated in the matrix to otherwise completely cover the particles. Thus portions of the active surface of the particles remains exposed to the flow of fluid thereby resulting in tortuous paths of flow through the matrix, thereby assuring contact with the treating particles.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: December 26, 2000
    Assignee: Robert Lehrer Associates, Inc.
    Inventors: Robert Lehrer, Diane Frederick, Claus Mettenheimer, Robert G. Sandberg
  • Patent number: 4261529
    Abstract: A device for winding and storage of ropes, cables, wires, etc., comprises a substantially elongate body portion having a pair of horn-like members extending from opposite ends thereof. The horn-like members are adapted to have a rope or the like coiled therearound, with at least one of the horn-like members being made so that it can be readily turned toward the other horn-like member, whereby the coil of rope or the like is readily disengaged and removed from the device.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: April 14, 1981
    Inventors: Robert G. Sandberg, Wade M. Ebeling