Patents by Inventor Duru Han

Duru Han 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).

  • Method and system for manufacturing a barbed suture
    Patent number: 12611210
    Abstract: A method for manufacturing a monofilament barbed suture. The method includes positioning a mandrel device adjacent to a rotary mount on which a razor is mounted, the mandrel device comprising a mandrel mounted to a fixture, a filament in contact with a curved surface of the mandrel; and rotating the razor with the rotary mount so that an edge of the razor impinges upon an exterior surface of the filament to impart a linear cut to the filament to a cut depth within the filament to form a barb. The mandrel has a diameter of 4 millimeters or less.
    Type: Grant
    Filed: July 8, 2025
    Date of Patent: April 28, 2026
    Assignee: Ethicon, Inc.
    Inventors: Frank Cichocki, Duru Han, Robert Scogna