Patents by Inventor Zei Zhang

Zei Zhang 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).

  • Electrode apparatus and method for the delivery of drugs and genes into tissue
    Patent number: 7395110
    Abstract: An electrode assembly for an apparatus for trans-surface molecular includes a non-conductive carrier having a proximal surface, a distal surface, and a plurality of through holes from the proximal surface to the distal surface, a plurality of first electrodes disposed on the proximal surface, a first conductor disposed on at least a first portion of the distal surface and extending through at least a first portion of the plurality of through holes and connected to the first electrodes on the proximal surface, a plurality of second electrodes disposed on the proximal surface, and a second conductor disposed on at least a second portion of the distal surface and extending through at least a second portion of the plurality of through holes and connected to the second electrodes on the proximal surface, wherein the first electrodes and the second electrodes are configured and disposed in closely spaced relation on the proximal surface for engaging the tissue surface and applying an electric field.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: July 1, 2008
    Assignee: Genetronics, Inc.
    Inventors: Günter A. Hofmann, Dietmar P. Rabussay, Zei Zhang
  • Electrode apparatus and method for the delivery of drugs and genes into tissue
    Publication number: 20040176716
    Abstract: An electrode assembly for an apparatus for trans-surface molecular includes a non-conductive carrier having a proximal surface, a distal surface, and a plurality of through holes from the proximal surface to the distal surface, a plurality of first electrodes disposed on the proximal surface, a first conductor disposed on at least a first portion of the distal surface and extending through at least a first portion of the plurality of through holes and connected to the first electrodes on the proximal surface, a plurality of second electrodes disposed on the proximal surface, and a second conductor disposed on at least a second portion of the distal surface and extending through at least a second portion of the plurality of through holes and connected to the second electrodes on the proximal surface, wherein the first electrodes and the second electrodes are configured and disposed in closely spaced relation on the proximal surface for engaging the tissue surface and applying an electric field.
    Type: Application
    Filed: February 20, 2004
    Publication date: September 9, 2004
    Inventors: Gunter A. Hofmann, Dietmar P. Rabussay, Zei Zhang
  • Electrode apparatus and method for the delivery of drugs and genes into tissue
    Patent number: 6748265
    Abstract: An electrode assembly for an apparatus for trans-surface molecular includes a non-conductive carrier having a proximal surface, a distal surface, and a plurality of through holes from the proximal surface to the distal surface, a plurality of first electrodes disposed on the proximal surface, a first conductor disposed on at least a first portion of the distal surface and extending through at least a first portion of the plurality of through holes and connected to the first electrodes on the proximal surface, a plurality of second electrodes disposed on the proximal surface, and a second conductor disposed on at least a second portion of the distal surface and extending through at least a second portion of the plurality of through holes and connected to the second electrodes on the proximal surface, wherein the first electrodes and the second electrodes are configured and disposed in closely spaced relation on the proximal surface for engaging the tissue surface and applying an electric field.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: June 8, 2004
    Assignee: Genetronics, Inc.
    Inventors: Günter A. Hofmann, Dietmar P. Rabussay, Zei Zhang
  • Electrode apparatus and method for the delivery of drugs and genes into tissue
    Publication number: 20020165481
    Abstract: An electrode assembly for an apparatus for trans-surface molecular includes a nonconductive carrier having a proximal surface, a distal surface, and a plurality of through holes from the proximal surface to the distal surface, a plurality of first electrodes disposed on the proximal surface, a first conductor disposed on at least a first portion of the distal surface and extending through at least a first portion of the plurality of through holes and connected to the first electrodes on the proximal surface, a plurality of second electrodes disposed on the proximal surface, and a second conductor disposed on at least a second portion of the distal surface and extending through at least a second portion of the plurality of through holes and connected to the second electrodes on the proximal surface, wherein the first electrodes and the second electrodes are configured and disposed in closely spaced relation on the proximal surface for engaging the tissue surface and applying an electric field.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 7, 2002
    Inventors: Gunter A. Hofmann, Dietmar P. Rabussay, Zei Zhang