Patents by Inventor Daniel Craig Stewart

Daniel Craig Stewart 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
    Publication number: 20080119786
    Abstract: A syringe (110) having a barrel (111) that receives a rod assembly (117). Mounted at the forward end of the Barrel (111) is a needle mounting (121) that receives as needle (124). The mounting (121) is releasably attached to the barrel (111). The rod assembly (117) includes a hollow rod (118) that has at its forward end a gripper device (135) that engages the mounting (121) so that upon release of the mounting (121) with respect to the barrel (111) and release of the device (135) with respect to the rod (118), the mounting (121) and device (135) are propelled into the rod (118) by a spring (138).
    Type: Application
    Filed: December 20, 2004
    Publication date: May 22, 2008
    Applicant: BREWER RETRACTABLE TECHNOLOGIES PTY LTD
    Inventors: Daniel Craig Stewart, Robert Warring Geddes, Roy Tudor Brewer, Craig Wilson