Patents by Inventor Ronald E. Gerhan

Ronald E. Gerhan 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: 7991039
    Abstract: A system and method for monitoring the operating parameters of an electric arc furnace having a primary electrical circuit comprising a primary current transformer. The method includes monitoring the furnace's primary current transformer; collecting data therefrom; transmitting the collected data to a server having an operatively connected monitor; and displaying the collected data on the monitor in substantially real-time. The server also collects information about the performance of the furnace from a programmable logic computer and information entered manually by an operator at a furnace monitoring viewer system, which may also be displayed in substantially real-time on the monitor.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: August 2, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Ronald E. Gerhan, Nicolas Lugo, Dave A. Lehr, Fernando Martinez Garcia
  • Patent number: 7313160
    Abstract: A furnace's operating efficiency is improved by simultaneously monitoring various furnace operating parameters such that the monitored values may be collectively examined and correlated to determine if the furnace is sub optimally operating. In particular, the electrode current, hydraulic valve spool position, hydraulic fluid pressure, and electrode mast position of an electrical arc furnace are simultaneously monitored and correlated to determine if any unidentified sub optimal operating conditions are present. By improving the chances of detecting and correcting sub optimal operating conditions, the present invention improves the electrode consumption and overall efficiency of a furnace's operation.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 25, 2007
    Assignee: Graftech International Holdings Inc.
    Inventor: Ronald E. Gerhan
  • Patent number: D749621
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: February 16, 2016
    Assignee: GrafTech International Holdings, Inc.
    Inventors: Ronald E. Gerhan, Wyllys King Ingersoll, III, Frank A. Messineo, Jr.
  • Patent number: D770511
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: November 1, 2016
    Assignee: GrafTech International Holdings Inc.
    Inventors: Ronald E. Gerhan, Wyllys King Ingersoll, III, Frank A. Messineo, Jr.