Patents by Inventor Stephen Earhart

Stephen Earhart 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).

  • Process for creating a stop surface on a syringe plunger rod
    Patent number: 7704426
    Abstract: A process for creating a stop surface on a plunger rod of a syringe is disclosed. The process includes the step of providing a preformed or molded plunger rod, and the step of forming a radially-extending deformation on the molded plunger rod. The presently disclosed in-line process allows for the use of a single molding rod to form plunger rods having one or more selectively located stop positions.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 27, 2010
    Assignee: Tyco Healthcare Group LP
    Inventors: Stephen Earhart, Richard L. Fiser
  • Process for creating a stop surface on a syringe plunger rod
    Publication number: 20080167625
    Abstract: A process for creating a stop surface on a plunger rod of a syringe is disclosed. The process includes the step of providing a preformed or molded plunger rod, and the step of forming a radially-extending deformation on the molded plunger rod. The presently disclosed in-line process allows for the use of a single molding rod to form plunger rods having one or more selectively located stop positions.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 10, 2008
    Inventors: Stephen Earhart, Richard L. Fiser