Patents by Inventor Theodor Krall

Theodor Krall 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: 6544536
    Abstract: Objects for use in medical application that are produced from plastics required to have an antimicrobially effective content of metals (or metal compounds) can be produced inexpensively by coating a plastic blank in the form of film, granules or fibers with the desired metal (or metal compound) according to the methods used in thin-film technology. The thus obtained intermediate is subsequently comminuted and mixed and, as the starting product for the desired final form, further processed. As a result, these objects are antimicrobially effective on every area of their surface, i.e. also on internal surfaces. The amount necessary for full effectiveness of the antimicrobially active substances, which in the case of the subject-matter of this invention are oligodynamically active metals (or metal compounds), is only a small percentage of that necessary when they are introduced into the plastic in the form of powder, which fact results in considerable financial advantages.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: April 8, 2003
    Inventors: Theodor Krall, J. Peter Guggenbichler
  • Patent number: 5976562
    Abstract: Objects for use in medical application that are produced from plastics required to have an antimicrobially effective content of metals (or metal compounds) can be produced inexpensively by coating a plastic blank in the form of film, granules or fibers with the desired metal (or metal compound) according to the methods used in thin-film technology. The thus obtained intermediate is subsequently comminuted and mixed and, as the starting product for the desired final form, further processed. As a result, these objects are antimicrobially effective on every area of their surface, i.e. also on internal surfaces. The amount necessary for full effectiveness of the antimicrobially active substances, which in the case of the subject-matter of this invention are oligodynamically active metals (or metal compounds), is only a small percentage of that necessary when they are introduced into the plastic in the form of powder, which fact results in considerable financial advantages.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: November 2, 1999
    Inventors: Theodor Krall, J. Peter Guggenbichler
  • Patent number: 5516480
    Abstract: A process is provided for producing a plastic part that cannot be colonized by germs and/or fungi. The process includes the step of sequentially treating the plastic part with a swelling agent to provide a swollen plastic part, and then treating the swollen plastic part with a solution of a water-insoluble compound containing a bactericidal and/or fungicidal metal, where the solution has a bactericidally and/or fungicidally effective concentration of the insoluble compound.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: May 14, 1996
    Assignees: Peter Guggenbichler, Theodor Krall
    Inventors: Theodor Krall, J. Peter Guggenbichler, Monika Girisch