Patents by Inventor Gregory Waimong Chang

Gregory Waimong Chang 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).

  • NEEDLE CATHETER
    Publication number: 20080125709
    Abstract: An apparatus including an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle including a body portion having a protuberance thereon and a delivery end distal to the protuberance; a stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance.
    Type: Application
    Filed: August 20, 2007
    Publication date: May 29, 2008
    Inventors: Gregory Waimong Chang, Fernando Gonzalez, Thuhuong Thi Phan, Dwight A. Ambat, Manolo Lumauig, Mina W. Chow