Patents by Inventor Helmut Beyer

Helmut Beyer 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 preparing bovine pericard materials and use thereof
    Patent number: 5413798
    Abstract: A process for treating bovine pericard tissue to increase resistance to biological degradation by wet-chemical processing, The wet-chemical processing consists essentially of: (i) separating any adherent fat and basal membrane from the tissue; (ii) contacting the tissue with an aqueous, alkaline solution of sodium hydroxide, potassium hydroxide, lithium hydroxide or sodium carbonate to swell the tissue; (iii) contacting the swollen tissue with an aqueous sodium chloride solution to control the swelling; (iv) contacting the tissue with a solution of a metal-ion complexing agent with a pH in excess of 11; and (v) contacting the tissue with an aqueous buffer solution having a pH of 4.5 to 6.0. Each of steps (ii)-(v) is followed by a water rinse. The pericard tissue is then dried and sterilized.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: May 9, 1995
    Assignee: B. Braun Melsungen Aktiengesellschaft
    Inventors: Edmund Scholl, Helmut Waldert, Helmut Beyer
  • Two-coordinate positioning device
    Patent number: 4286197
    Abstract: A positioning device with two coordinates, for the moving of two components relative to each other. The positioning device with two coordinates serves for the exact positioning of a tool or workpiece, preferably of semi-conductor discs, for the purpose of checking or fabricating in the course of the manufacturing process.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: August 25, 1981
    Inventors: Riessland Eberhard, Helmut Beyer, Erich Kossman