Patents by Inventor Harry V. Samuelson

Harry V. Samuelson 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).

  • Filament having a triangular cross-section and 3 or 6 axially extending voids
    Patent number: 5523155
    Abstract: Triangular thermoplastic polymer filaments having 3 or 3 pair axially extending voids located along the convex sides of the filament and spinneret plates for producing such filaments.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: June 4, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Perry H. Lin, Harry V. Samuelson
  • Sheath-core spinning of multilobal conductive core filaments
    Patent number: 5260013
    Abstract: Multilobal core conductive bicomponent sheath-core filaments are provided and methods for making the same.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: November 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Sheath-core spinning of multilobal conductive core filaments
    Patent number: 5202185
    Abstract: Multilobal core conductive bicomponent sheath-core filaments are provided and methods for making the same.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: April 13, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Hollow fibers having curved members projecting therefor
    Patent number: 4956237
    Abstract: A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 11, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Co-spun filament within a hollow filament and spinneret for production thereof
    Patent number: 4861661
    Abstract: A hollow fiber which contains within the hollow a co-spun hollow or solid filament. The solid filament is formed of polymer that can distribute energy within the hollow fiber while a co-spun hollow inner filament can also act as a vessel for transportation or separation of fluids. Spinnerets for co-spinning such filaments are of one piece construction.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: August 29, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Spinneret for hollow fibers having curved spacing members projecting therefrom
    Patent number: 4850847
    Abstract: A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: July 25, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Spinneret for a co-spun filament within a hollow filament
    Patent number: 4743189
    Abstract: A hollow fiber which contains within the hollow a co-spun hollow or solid filament. The solid filament is formed of polymer that can distribute energy within the hollow fiber while a co-spun hollow inner filament can also act as a vessel for transportation or separation of fluids. Spinnerets for co-spinning such filaments are of one piece construction.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: May 10, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Spinneret plate
    Patent number: 4385886
    Abstract: A spinneret plate the outlet orifice of which is made up of slots, at least two of the slots being arc shaped, useful to produce textile filaments that are readily fracturable in a fluid jet to produce a yarn having free ends.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: May 31, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Antistatic filament having a polymeric sheath and a conductive polymeric core
    Patent number: 4145473
    Abstract: An antistatic filament having a polymeric sheath and a conductive polymeric core of a defined nature, the core constituting less than 10% of the cross-sectional area of the filament.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: March 20, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harry V. Samuelson, Dean H. Smiley