Patents by Inventor David Tseng

David Tseng 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).

  • Patent number: 6533806
    Abstract: An endoluminal prosthetic delivery system provides a delivery sheath possessing a yield strength capable of allowing implantation of the prosthesis with increased efficiency. An endoluminal prosthesis is inserted in a body in a radially compressed condition, and expanded at an implantation site, whereby a delivery sheath or the prosthesis itself possesses a yield strength sufficient to allow radial expansion of the prosthesis. A method of implanting an endoluminal prosthesis is also herein provided.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: March 18, 2003
    Assignee: Scimed Life Systems, Inc.
    Inventors: Jason Sullivan, Ellen Golds, David Tseng, Jeff Boatman
  • Publication number: 20030028237
    Abstract: An endoluminal prosthetic delivery system provides a delivery sheath possessing a yield strength capable of allowing implantation of the prosthesis with increased efficiency. An endoluminal prosthesis is inserted in a body in a radially compressed condition, and expanded at an implantation site, whereby a delivery sheath or the prosthesis itself possesses a yield strength sufficient to allow radial expansion of the prosthesis. A method of implanting an endoluminal prosthesis is also herein provided.
    Type: Application
    Filed: September 23, 2002
    Publication date: February 6, 2003
    Inventors: Jason Sullivan, Ellen Golds, David Tseng, Jeff Boatman
  • Patent number: 6492180
    Abstract: A method and apparatus for non-invasive extraction and/or detection of chemicals such as heavy metals, drugs such as cocaine and analytes such as blood glucose has been developed. A patch or hydrogel containing a reagent such as N-methyl pyrrole, or a similar compound, is used to extract the chemical or analyte to be measured through the skin or hair. This method is most useful for detecting analytes which are generally present in relatively constant blood concentrations. The method is particularly useful for the detection of heavy metals such as lead, lithium, copper, iron, and has been demonstrated to be useful with drugs such as cocaine and acetominaphen, and metabolic analytes like blood glucose. In the preferred embodiment, the method involves the use of the water miscible solvent N-methyl pyrrolidone (NMP) in an aqueous solution which is incorporated into an adsorbent pad or hydrogel.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: December 10, 2002
    Assignee: Transderm Technologies LLC
    Inventors: Larry R. Brown, Elazer Edelman, David Tseng
  • Publication number: 20020091437
    Abstract: A tubular intraluminal prosthesis includes a PTFE or ePTFE tubular structure such as a graft, and a tubular diametrically deformable stent circumferentially surrounding the tubular structure. The diametrically deformable stent includes a polymeric coating which allows for attachment to the tubular graft structure and enhances the biocompatibility and integrity of the composite prosthesis.
    Type: Application
    Filed: February 5, 2002
    Publication date: July 11, 2002
    Inventors: David Tseng, William Donahue, Bruce A. Parsons
  • Patent number: 6364903
    Abstract: A tubular intraluminal prosthesis includes a PTFE or ePTFE tubular structure such as a graft, and a tubular diametrically deformable stent circumferentially surrounding the tubular structure. The diametrically deformable stent includes a polymeric coating which allows for attachment to the tubular graft structure and enhances the biocompatibility and integrity of the composite prosthesis.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: April 2, 2002
    Assignee: Meadox Medicals, Inc.
    Inventors: David Tseng, William Donahue, Bruce A. Parsons
  • Publication number: 20020019055
    Abstract: A method and apparatus for non-invasive extraction and/or detection of chemicals such as heavy metals, drugs such as cocaine and analytes such as blood glucose has been developed. A patch or hydrogel containing a reagent such as N-methyl pyrrole, or a similar compound, is used to extract the chemical or analyte to be measured through the skin or hair. This method is most useful for detecting analytes which are generally present in relatively constant blood concentrations. The method is particularly useful for the detection of heavy metals such as lead, lithium, copper, iron, and has been demonstrated to be useful with drugs such as cocaine and acetominaphen, and metabolic analytes like blood glucose.
    Type: Application
    Filed: June 24, 1999
    Publication date: February 14, 2002
    Inventors: LARRY R. BROWN, ELAZER EDELMAN, DAVID TSENG
  • Publication number: 20010049551
    Abstract: A tubular intraluminal prosthesis includes a PTFE or ePTFE tubular structure such as a graft, and a tubular diametrically deformable stent circumferentially surrounding the tubular structure. The diametrically deformable stent includes a polymeric coating which allows for attachment to the tubular graft structure and enhances the biocompatibility and integrity of the composite prosthesis.
    Type: Application
    Filed: March 19, 1999
    Publication date: December 6, 2001
    Inventors: DAVID TSENG, WILLIAM DONAHUE, BRUCE A. PARSONS
  • Patent number: 6109564
    Abstract: A magnetically suspended door is described for the protection of spacecraft instrumentation exposed to space. The door is slid between an opened or closed position using electromagnets.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: August 29, 2000
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Phi-Anh Bui, Margaret Showalter, Darren Hand, Albert Kwong, Kendra Lipinski, Val Lipinski, David Paradiso, Carl Towner, David Tseng, Wesley Turner
  • Patent number: 5431264
    Abstract: An electric vehicle having a non-metallic body portion and equipped with an inductive charging coil for charging the vehicle's battery while the electric vehicle is moving includes a magnetic flux barrier attached to the non-metallic body portion and encompassing a passenger compartment of the electric vehicle for resisting penetration of magnetic flux into the passenger compartment. The inductive charging coil may be formed of wire wound around the body of the electric vehicle or, alternatively, may be formed of stripes etched on the body surface or of flexible adhesive conductors.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: July 11, 1995
    Inventors: Ling-Yuan Tseng, David Tseng
  • Patent number: 5311973
    Abstract: A battery of an electric vehicle is inductively charged while the electrical vehicle is moving, using a magnetic field along different portions of an extended linear distance and an inductive coil mounted on an electric vehicle, by having the electric vehicle, as it traverses the different portions of the extended linear distance, move within the influence of the magnetic field. An apparatus senses progress of the electric vehicle along the extended linear distance. The apparatus produces the magnetic field by a power switch bank connected to an array of inductive coils.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: May 17, 1994
    Assignee: Ling-Yuan Tseng
    Inventors: Ling-Yuan Tseng, David Tseng
  • Patent number: 5297664
    Abstract: A parking meter and an electric charging meter are combined in a single apparatus. The combined charging/parking meter may be coin-operated or may be operated using an information-bearing card such as a cash card, a debit card or an IC card. In particular, the charging/parking meter includes a device for receiving and verifying a medium of payment, a device for selecting and visibly indicating some combination of parking time and electric power to be had in exchange for the medium of payment, and a charging device for connecting to and supplying power to an electric car charger inlet. The charger/parking meter may further include a fast-charge setting device for causing the charging device to operate in a fast-charge mode when an amount of parking time selected is insufficient in accordance with a normal charging mode to supply an amount of electric power selected.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: March 29, 1994
    Inventors: Ling-Yuan Tseng, David Tseng