Patents by Inventor Raymond W. Jurgens, Jr.

Raymond W. Jurgens, Jr. 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).

  • Bilayered oral pharmaceutical composition with pH dependent release
    Patent number: 5316772
    Abstract: An oral pharmaceutical composition comprises a core containing a drug, a first inner layer coating on the core which contains a drug, and a second inner layer coating on the first inner layer coating which also contains drug. This oral pharmaceutical composition is used especially for treating intestinal diseases.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: May 31, 1994
    Assignee: Solvay & Cie, S.A. (Societe Anonyme)
    Inventors: Raymond W. Jurgens, Jr., Roger D. Graben, Adnan S. Sabir
  • Method of producing prefilled sterile plastic syringes
    Patent number: 4718463
    Abstract: There is disclosed a process for producing sterilized prefilled plastic syringes avoiding plastic deformation and distortion. The plastic barrels are subjected to repeated water jet washing steps to remove contaminants and depyrogenate the barrels. Tip seals and pistons are subjected to removal of debris and pyrogens and destruction of microbial contaminants. After the tip is assembled on the nozzle of the barrel, the barrel is filled with contrast media through its open end, after which the piston is assembled in the open end to seal the syringe and its contents. The assembled and sealed syringe is then subjected to autoclaving to sterilize the syringe and its contents, without deformation of the plastic syringe or a loss of integrity to the closed media/syringe system.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: January 12, 1988
    Assignee: Mallinckrodt, Inc.
    Inventors: Raymond W. Jurgens, Jr., Richard G. Johnson, Leroy R. Nadler
  • Method of producing prefilled sterile plastic syringes
    Patent number: 4628969
    Abstract: There is disclosed a process for producing sterilized prefilled plastic syringes avoiding plastic deformation and distortion. The plastic barrels are subjected to repeated water jet washing steps to remove contaminants and depyrogenate the barrels. Tip seals and pistons are subjected to washing, autoclaving and rinsing steps to remove contaminants and depyrogenate. After the tip is assembled on the nozzle of the barrel, the barrel is filled with contrast media through its open end, after which the piston is assembled in the open end to seal the syringe and its contents. The assembled and sealed syringe is then subjected to autoclaving to sterilize the syringe and its contents, without deformation of the plastic syringe or a loss of integrity to the closed media/syringe system.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: December 16, 1986
    Assignee: Mallinckrodt, Inc.
    Inventors: Raymond W. Jurgens, Jr., Richard G. Johnson, Leroy R. Nadler