Patents by Inventor Robert R. Kress

Robert R. Kress 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).

  • Sheath-core yarn for severe thermal protecting fabrics and method therefor
    Patent number: 4381639
    Abstract: A sheath-core yarn and methods of preparing it are disclosed. A sheath of aramid fibers surrounds a continuous filament core composed of an amorphous silica product containing at least 96% silica and having the thermal performance of a refractory material. The yarn is useful in woven or knitted safety garments which must provide protection under such severe conditions as splattering molten steel.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: May 3, 1983
    Assignee: Record Industrial Company
    Inventor: Robert R. Kress