Patents by Inventor Warren S. Perkins

Warren S. Perkins 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 sizing spun yarns
    Patent number: 5626952
    Abstract: A process for sizing spun yarns by adding urea in an amount of about 10 to 50% by weight of the weight of a polyacrylamide polymer, wherein the polymer and urea are applied in an amount sufficient to impart a high order of abrasion resistance to the yarn.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: May 6, 1997
    Assignee: Callaway Corporation
    Inventors: Michael L. McAbee, Warren S. Perkins, Donald H. Shomake
  • Process for recycling textile warp yarn size
    Patent number: 4106900
    Abstract: A chemical, useful as a warp size, which is soluble in water at one temperature and insoluble at a different temperature, is applied to textile yarns in the process known as slashing. By manipulation of temperatures the chemical is reclaimed and recycled as a warp size. The water from the reclamation step may be recycled, or the water may be discharged with a minimum of waste treatment.
    Type: Grant
    Filed: January 18, 1977
    Date of Patent: August 15, 1978
    Assignee: Auburn University Research Foundation
    Inventor: Warren S. Perkins