Patents by Inventor George F. Fischer

George F. Fischer 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).

  • Scaleless on-line rheometer device
    Patent number: 6405579
    Abstract: A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt
    Type: Grant
    Filed: September 11, 1999
    Date of Patent: June 18, 2002
    Assignee: General Electric Company
    Inventors: Mahari Tjahjadi, Joseph M. H. Janssen, George F. Fischer, Ye-Gang Lin, Safwat E. Tadros, Galina D. Georgieva, Scott S. Haraburda
  • On-line rheometer device
    Patent number: 5974866
    Abstract: A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: November 2, 1999
    Assignee: General Electric Company
    Inventors: Mahari Tjahjadi, Joseph M. H. Janssen, George F. Fischer, Ye-Gang Lin, Safwat E. Tadros, Galina D. Georgieva