Patents by Inventor Steve A. Rechtsteiner

Steve A. Rechtsteiner 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).

  • Method of filling, sampling and sealing an aseptic tank
    Patent number: 4047547
    Abstract: The method of this invention includes aseptically sealing an empty sterilized tank while maintaining asepsis of the tank, and thereafter connecting a product line to an opening in the tank, sterilizing the product line while so connected, and filling the tank with sterile product from the product line, all without destroying the aseptic condition of the tank. In addition, the method includes sampling the product in the product line during the tank filling operation while maintaining asepsis of both the product line and the tank. Finally, the method includes sealing the tank when full of sterile product, removing samples of sterile product from the tank subsequent to its filling and resealing the tank after each such sampling operation. Asepsis is maintained during each of the tank sealing, tank sampling and tank re-sampling operations.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: September 13, 1977
    Inventors: Steve A. Rechtsteiner, Philip E. Nelson, John R. Heron
  • Method of aseptically sealing a storage tank
    Patent number: 3998589
    Abstract: Aseptically sealing an empty sterilized tank while maintaining asepsis of the tank, and thereafter connecting a product line to an opening in the tank, sterilizing the product line while so connected, and filling the tank with sterile product from the product line, all without destroying the aseptic condition of the tank. In addition, sampling the product in the product line during the tank filling operation while maintaining asepsis of both the product line and the tank. Finally, sealing the tank when full of sterile product, removing samples of sterile product from the tank subsequent to its filling and resealing the tank after each such sampling operation. Asepsis is maintained during each of the tank sealing, tank sampling and tank re-sampling operations.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: December 21, 1976
    Inventors: Steve A. Rechtsteiner, Philip E. Nelson, John R. Heron
  • Method of filling, sampling and sealing an aseptic tank with sterile product without destroying asepsis of either the sterile product or the tank and its associated valves and fittings
    Patent number: 3951184
    Abstract: The method of this invention includes aseptically sealing an empty sterilized tank while maintaining asepsis of the tank, and thereafter connecting a product line to an opening in the tank, sterilizing the product line while so connected, and filling the tank with sterile product from the product line, all without destroying the aseptic condition of the tank. In addition, the method includes sampling the product in the product line during the tank filling operation while maintaining asepsis of both the product line and the tank. Finally, the method includes sealing the tank when full of sterile product, removing samples of sterile product from the tank subsequent to its filling and resealing the tank after each such sampling operation. Asepsis is maintained during each of the tank sealing, tank sampling and tank re-sampling operations.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: April 20, 1976
    Assignee: Purdue Research Foundation
    Inventors: Steve A. Rechtsteiner, Philip E. Nelson, John R. Heron