Patents by Inventor Edward Gregorio

Edward Gregorio 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: 5346475
    Abstract: A single-use syringe for covering its needle after injection of a medical preparation. The syringe has a barrel and has a non-reversible shield for covering the needle. The shield has an inclined interior shield tooth of resilient material, and the barrel has a coacting inclined exterior row of teeth of non-resilient material, whereby the shield tooth locks behind a barrel tooth when the needle is covered and the shield cannot reverse its travel.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: September 13, 1994
    Inventor: Edward Gregorio