Patents by Inventor Joseph H Kaal

Joseph H Kaal 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).

  • Single use syringe
    Patent number: 7500967
    Abstract: A single use retractable syringe and plunger are provided. The syringe has a barrel having a collar with one or two projections that slidably engage a plurality of interconnected slots of the plunger. The slots of the syringe include one or more gates or abutments that restrict slidable movement of the projections within the slots to thereby prevent re-use of the syringe after injection and subsequent retraction of the needle.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: March 10, 2009
    Assignee: Unitract Pty. Ltd.
    Inventors: Craig S Thorley, Joseph H Kaal
  • Single use syringe
    Publication number: 20030158525
    Abstract: A single use retractable syringe and plunger are provided. The syringe has a barrel having a collar with one or two projections that slidably engage a plurality of interconnected slots of the plunger. The slots of the syringe include one or more gates or abutments that restrict slidable movement of the projections within the slots to thereby prevent re-use of the syringe after injection and subsequent retraction of the needle.
    Type: Application
    Filed: April 15, 2003
    Publication date: August 21, 2003
    Inventors: Craig S Thorley, Joseph H Kaal