Patents by Inventor Archie R. Bice

Archie R. Bice 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).

  • Process for making composites of stretch broken aligned fibers and product thereof
    Patent number: 5045388
    Abstract: A stretch broken fiber reinforced resin tow is formed from resin reinforced with continuous filaments by tensioning the tow while heating it to a temperature sufficient to soften the resin in the tensioning zone to break all of the filaments in a random manner.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: September 3, 1991
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Archie R. Bice, David H. Edison, Floyd H. Fish, Jr., Mark W. Hopkins, Richard K. Okine
  • Process for making composites of stretch broken aligned fibers
    Patent number: 5006294
    Abstract: A stretch broken fiber reinforced resin tow is formed from resin reinforced with continuous filaments by tensioning the two while heating it to a temperature sufficient to soften the resin in the tensioning zone to break all of the filaments in a random manner.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: April 9, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Archie R. Bice, David H. Edison, Floyd H. Fish, Jr., Mark W. Hopkins, Richard K. Okine
  • Process for removing chloroprene dimers from polychloroprene
    Patent number: 4943402
    Abstract: Removing chloroprene dimers from polychloroprene by feeding to a screw extruder a polychloroprene latex and coagulating the latex in the extruder, feeding the coagulated latex to a dewatering zone and discharging the coagulated polychloroprene through a flow restriction which heats and pressurizes the polychloroprene to an area of reduced pressure to form a porous crumb. Also, the flow restriction applies back pressure sufficient that the water in the polychloroprene is forced out of a vent port. The polychloroprene crumb discharged from the extruder is heated to strip chloroprene dimer therefrom.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: July 24, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Fred Y. Kafka, Archie R. Bice, Donald K. Burchett
  • Extrusion process for recovery of polymers from their dispersions in liquids
    Patent number: 4136251
    Abstract: Polymers are isolated from their dispersions in liquid media in a twin-screw extruder, wherein the screws in the feed area are intermeshing and fully wiping each other and the extruder bore, the polymer dispersion or latex (which is coagulated in the first zone) being conveyed to a high pressure seal zone, liquid being forced upstream and out of the extruder, and the polymer being conveyed through the seal, into a reduced pressure zone, where most remaining liquid is removed, and finally into a pumping zone from which it is extruded. The invention avoids high pressure pumping of polymer dispersions and also is applicable to dispersions of sticky thermoplastic or elastomeric materials, which have caused considerable difficulties in the past.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: January 23, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Archie R. Bice, Donald K. Burchett
  • Process for recovery of polymers from their dispersions in liquids
    Patent number: RE30378
    Abstract: Polymers are isolated from their dispersions in liquid media in a twin-screw extruder, wherein the screws in the feed area are intermeshing and fully wiping each other and the extruder bore, the polymer dispersion or latex (which is coagulated in the first zone) being conveyed to a high pressure seal zone, liquid being forced upstream and out of the extruder, and the polymer being conveyed through the seal, into a reduced pressure zone, where most remaining liquid is removed, and finally into a pumping zone from which it is extruded. The invention avoids high pressure pumping of polymer dispersions and also is applicable to dispersions of sticky thermoplastic or elastomeric materials, which have caused considerable difficulties in the past.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: August 19, 1980
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Archie R. Bice, Donald K. Burchett