Patents by Inventor Frederick Anthony Schaefer

Frederick Anthony Schaefer 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).

  • System and method of processing electric arc furnace dust
    Patent number: 7227882
    Abstract: A method of processing electric arc furnace dust includes the steps of preheating a portion of electric arc furnace dust to a temperature of at least 170 degrees centigrade by convection heating to form a preheated dust. The preheated dust is further heated by microwaves until a zinc in the preheat dust vaporizes to form a metal vapor and a residue. The metal vapor is then condensed.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: June 5, 2007
    Assignee: Edw. C. Levy Co.
    Inventor: Frederick Anthony Schaefer
  • Process for treating waste oil
    Patent number: 7045038
    Abstract: There is disclosed a burnable used oil fuel product by the process comprising: (a) obtaining a used oil sample having at least 1% (by weight) aqueous substances; (b) heating the used oil sample to a temperature of from about 20° C. to about 60° C.; and (c) extracting a volume of water from the heated used oil by adding super critical CO2.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: May 16, 2006
    Assignee: Industrial Microwave Technologies, Inc.
    Inventor: Frederick Anthony Schaefer
  • Customer service operation using wav files
    Patent number: 6640210
    Abstract: A customer service center includes a server connected to a computer network. The server contains a speech recognition system. An operator station is capable of connecting to the server. A microphone is connected to the operator station. A codec is connected to the microphone and the operator station.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: October 28, 2003
    Inventors: Frederick Anthony Schaefer, Paul Michael Brashear
  • System and method for responding to email and self help requests
    Publication number: 20010053977
    Abstract: A customer service center (10) includes a server (12) connected to a computer network (18). The server (12) contains a speech recognition system (14). An operator station (16) is capable of connecting to the server (12). A microphone (19) is connected to the operator station (16). A codec (20) is connected to the microphone (19) and the operator station (16).
    Type: Application
    Filed: May 25, 2001
    Publication date: December 20, 2001
    Applicant: Realperson, Inc.
    Inventor: Frederick Anthony Schaefer