Patents by Inventor Andreas Au

Andreas Au 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).

  • Plug for metallurgical vessels
    Patent number: 5361825
    Abstract: The invention relates to a plug made of refractory material for a metallurgical casting vessel. The plug 5, which can be formed with a central axial channel 5b, has an axial channel 5d which terminates eccentrically in front of the plug cap 5a and which is disposed in an axially extending rib 5c formed on the plug 5. A thermocouple 6 with its measuring cables is accommodated in said further axial channel 5d.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: November 8, 1994
    Inventors: Hermann Lax, Andreas Au