Patents by Inventor Peter Baeckstrum

Peter Baeckstrum 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: 5378361
    Abstract: Described is a column for separation of substance mixtures with a liquid. A cylindrical tube has a closure at each end. At least one of the closures is a movable piston. The piston has a socket which is radially expandable by axial pressing of two interacting conical parts for sealing of the piston against the inner wall of the column.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: January 3, 1995
    Inventor: Peter Baeckstrum