Patents by Inventor John B. Schmitz

John B. Schmitz 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).

  • Dual dose ampule
    Patent number: 4413991
    Abstract: A method of an apparatus for hypodermically injecting at least two liquid medicaments which are kept separate from each other until use, and then causing them to be merged into a single pressurized flow stream in the lumen of a single hypodermic needle. Also, a liquid medicament ampule for plural medicaments, and a hypodermic needle carried in the ampule and isolated from the medicament compartments until use, to prevent possible corrosion of the needle by either or both of the medicaments.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: November 8, 1983
    Inventors: John B. Schmitz, William L. Schmitz
  • Corrosive protected hypodermic module
    Patent number: 4316463
    Abstract: A hypodermic injection device including an injector and a medicament and needle ampule wherein the needle is initially isolated from a possibly corrosive medicament, but wherein the needle is movable to a position in flow communication with the medicament only at the moment of injection, and an injector device into which the ampule can be loaded under controlled conditions of needle entry force and depth, medicament entry into tissue being accomplished while the needle is moving in its penetration of tissue.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: February 23, 1982
    Assignee: Vac-O-Cast, Inc.
    Inventors: William L. Schmitz, John B. Schmitz