Patents by Inventor Dahn C. Tran

Dahn C. Tran 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 OF MAKING LOW-TEMPERATURE OPTICAL GLASS FIBERS FREE OF DEFECTS
    Publication number: 20090090136
    Abstract: A method of molding low-temperature glass into a preform for formation by drawing into glass fiber, especially for transmission of mid-IR, involves casting a cladding glass into a mold cavity in the shape of the desired preform to form a cladding layer, and forming a glass core within the cladding layer, wherein the molten cladding glass is drained from the bottom of the mold cavity, forming an annular coating of cladding glass as an annular layer, and the core glass is quickly added within the annular cladding layer to form the glass core with the cladding layer thereabout.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 9, 2009
    Applicant: INFRARED FOCAL SYSTEMS, INC.
    Inventor: Dahn C. Tran