Patents by Inventor Teh-Hsun B. Chen

Teh-Hsun B. Chen 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).

  • AIR-SAMPLING DEVICE AND METHOD OF USE
    Publication number: 20120160010
    Abstract: The present disclosure concerns embodiments of a sampling apparatus that utilizes one or more cyclone separators to collect airborne particles from the atmosphere. In one representative embodiment, the sampling apparatus includes a collection-vessel retaining member that is adapted to be removably coupled to a collection vessel. The retaining member has an air-inlet conduit for permitting air to flow through the open end of the collection vessel and an air-outlet conduit for permitting air to exit the open end of the collection vessel. The air-inlet conduit and the air-outlet conduit are configured to cause air flowing into the collection vessel to establishes a cyclonic flow path, which causes airborne particles to separate out from the air stream and collect in the collection vessel.
    Type: Application
    Filed: May 12, 2008
    Publication date: June 28, 2012
    Inventors: Teh-Hsun B. Chen, Gregory Feather, Jyoti Keswani, Herbert David Edgell III
  • Air-sampling device and method of use
    Patent number: 8205511
    Abstract: The present disclosure concerns embodiments of a sampling apparatus that utilizes one or more cyclone separators to collect airborne particles from the atmosphere. In one representative embodiment, the sampling apparatus includes a collection-vessel retaining member that is adapted to be removably coupled to a collection vessel. The retaining member has an air-inlet conduit for permitting air to flow through the open end of the collection vessel and an air-outlet conduit for permitting air to exit the open end of the collection vessel. The air-inlet conduit and the air-outlet conduit are configured to cause air flowing into the collection vessel to establishes a cyclonic flow path, which causes airborne particles to separate out from the air stream and collect in the collection vessel.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: June 26, 2012
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services, Centers for Disease Control and Prevention
    Inventors: Teh-Hsun B. Chen, Gregory Feather, Jyoti Keswani, Herbert David Edgell, III
  • Air-sampling device and method of use
    Patent number: 7370543
    Abstract: The present disclosure concerns embodiments of a sampling apparatus that utilizes one or more cyclone separators to collect airborne particles from the atmosphere. In one representative embodiment, the sampling apparatus includes a collection-vessel retaining member that is adapted to be removably coupled to a collection vessel. The retaining member has an air-inlet conduit for permitting air to flow through the open end of the collection vessel and an air-outlet conduit for permitting air to exit the open end of the collection vessel. The airinlet conduit and the air-outlet conduit are configured to cause air flowing into the collection vessel to establishes a cyclonic flow path, which causes airborne particles to separate out from the air stream and collect in the collection vessel.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: May 13, 2008
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Teh-Hsun B. Chen, Gregory Feather, Jvoti Keswani, Herbert David Edgell, III