Patents by Inventor J. Kenneth Hoffman

J. Kenneth Hoffman 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).

  • Hypodermic syringe
    Patent number: 5019053
    Abstract: A disposable hypodermic syringe including a cartridge having a threaded end to which is fastened a hub coupled to a needle. The opposite end of the cartridge is configured to receive a finger grasp. A piston rod has one end which extends through the finger grasp and is fastened to a plunger internal of the cartridge. The opposite end of the piston rod includes a head.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: May 28, 1991
    Assignee: GTE Products Corporation
    Inventors: J. Kenneth Hoffman, Joseph W. Blake, III
  • Hypodermic syringe
    Patent number: 5002537
    Abstract: An inner elongated tubular member, a plurality of arms which extend through openings in the elongated tubular member and a concentric outer sleeve moveable relative to the inner tubular member for urging each of the arms into engagement with the hub of a needle attached to one end of a cartridge to lock the cartridge and its needle relative to the tubular member and form a hypodermic needle.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: March 26, 1991
    Assignee: GTE Products Corporation
    Inventors: J. Kenneth Hoffman, Joseph W. Blake, III
  • Hypodermic syringe
    Patent number: 5000744
    Abstract: An inner elongated tubular member having a plurality of arms which extend from one end thereof and a concentric outer sleeve slideable relative to the tubular member for urging each of the arms into engagement with the hub of a needle attached to one end of a medicament cartridge to lock the cartridge and its needle to the tubular member and form a hypodermic needle.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: March 19, 1991
    Assignee: GTE Products Corporation
    Inventors: J. Kenneth Hoffman, Joseph W. Blake, III
  • Hypodermic syringe
    Patent number: 4990142
    Abstract: An inner elongated tubular member having a plurality of arms which extend from one end thereof and a concentric outer sleeve slideable relative to the tubular member for urging each of the arms into engagement with the hub of a needle attached to one end of a medicament cartridge to lock the cartridge and its needle to the tubular member and form a hypodermic needle.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: February 5, 1991
    Assignee: GTE Products Corporation
    Inventors: J. Kenneth Hoffman, Joseph W. Blake, III