Patents by Inventor Marja Eriksson

Marja Eriksson 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).

  • Dosing means for a hypodermic syringe
    Patent number: 4623344
    Abstract: A dosing means for facilitating the drawing of respective predetermined volumes of two liquids to be injected, in a single injection, into a hypodermic syringe comprises a first positioning element to hold the body of a removable hypodermic syringe, an axially displaceable plunger, and a second positioning element to hold a removable ampoule containing injection liquid. The two positioning elements are arranged so that the tip of the needle of the hypodermic syringe is inside the ampoule when the syringe and ampoule are located in the device. From the first positioning element a pin protrudes axially and carries first and second stops cooperating with the end of the plunger. When liquid is to be drawn in to the hypodermic syringe the plunger is drawn out until its end part meets the first stop. The first ampoule is then replaced by an ampoule containing a different type of liquid.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: November 18, 1986
    Assignee: Duma AB
    Inventor: Marja Eriksson
  • Liquid dosage device
    Patent number: D242878
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: December 28, 1976
    Inventor: Marja Eriksson