Patents by Inventor Roman Vladimirsky

Roman Vladimirsky 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).

  • Retractable hypodermic needle
    Patent number: 7465294
    Abstract: A needle assembly includes a sheath into which a hypodermic needle is withdrawn in a protected position. Installation of the needle assembly onto a Luer lock causes the needle to be thrust forward out of the sheath. A spring urges the needle to the withdrawn position. An elastomeric ball in the needle assembly provides sealing.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: December 16, 2008
    Inventor: Roman Vladimirsky
  • Single-use hypodermic syringe
    Patent number: 5389075
    Abstract: The single-use hypodermic syringe has a body in the form of a hypodermic syringe cylinder with a needle connection on the front. A piston in the cylinder draws in and discharges liquid. The plunger is connected to the piston by means of a collar which permits withdrawal of the piston. When the plunger returns the piston, a spring deflects to release the collar so that a second withdrawal stroke is prevented.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 14, 1995
    Inventor: Roman Vladimirsky