Patents by Inventor Spero Sampanis

Spero Sampanis 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 of making bicomponent acrylic fibers having reversible crimp
    Patent number: 5232647
    Abstract: An acrylic fiber tow which includes 1) monocomponent filaments of each of two acrylonitrile polymers differing in hydrophilic properties, 2) bicomponent filaments of both of said polymers having one interface between polymers components and 3) bicomponent filaments of both of said polymers having more than one interface between polymer components. This fiber, however, in spite of its composition of numerous filaments of differing structure provides a tow bundle having a desirable level of reversible crimp measured in a manner specific to the type of crimp designated.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: August 3, 1993
    Assignee: American Cyanamid Company
    Inventors: Spero Sampanis, Ronald E. Pfeiffer, Francesco De Maria, William E. Streetman, Maurice M. Zwick
  • Reversible crimp bicomponent acrylic fibers
    Patent number: 5130195
    Abstract: An acrylic fiber tow is disclosed which comprises 1) monocomponent filaments of each of two acrylonitrile polymers differing in hydrophilic properties, 2) bicomponent filaments of both of said polymers having one interface between polymers components and 3) bicomponent filaments of both of said polymers having more than one interface between polymer components. This fiber, however, in spite of its composition of numerous filaments of differing structure provides a tow bundle having a desirable level of reversible crimp measured in a manner specific to the type of crimp designated.Also disclosed is a method for wet-spinning the novel fiber using a static mixing unit in conjunction with a spinnerette normally used for wet-spinning monocomponent filaments.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: July 14, 1992
    Assignee: American Cyanamid Company
    Inventors: Spero Sampanis, Ronald E. Pfeiffer, Francesco De Maria, William E. Streetman, Maurice M. Zwick