Patents by Inventor Jon R. Williams

Jon R. Williams 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).

  • Method of preparing multiconstituent fibers and nonwoven structures
    Patent number: 5582667
    Abstract: Multiconstituent fibers prepared from two or more polymers, with at least one of these polymers being randomly dispersed through the fiber, in the form of domains. At least about 40 percent by weight of these domains have one length of at least 20 microns, measured in the direction along the fiber axis, and have another length, measured along the longest line dissecting the domain cross-section in a plane perpendicular to the fiber axis, of at least about 5 percent of the fiber equivalent diameter.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: December 10, 1996
    Assignee: Hercules Incorporated
    Inventors: Rakesh K. Gupta, Jon R. Williams
  • Random macrodomain multiconstituent fibers, their preparation, and nonwoven structures from such fibers
    Patent number: 5554441
    Abstract: Multiconstituent fibers prepared from two or more polymers, with at least one of these polymers being randomly dispersed through the fiber, in the form of domains. At least about 40 percent by weight of these domains have one length of at least 20 microns, measured in the direction along the fiber axis, and have another length, measured along the longest line dissecting the domain cross-section in a plane perpendicular to the fiber axis, of at least about 5 percent of the fiber equivalent diameter.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: September 10, 1996
    Assignee: Hercules Incorporated
    Inventors: Rakesh K. Gupta, Jon R. Williams