Patents by Inventor N. Geoffrey Greenberg

N. Geoffrey Greenberg 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).

  • Sewing thread
    Patent number: 7905081
    Abstract: An improved sewing thread and method of making it where at least one strand of spun yarn is composed of 100% staple fibers and has a high level of single twist that is equal to or greater than 4 more turns per inch than that of the ply twisted final product.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: March 15, 2011
    Assignee: American & Efird, Inc.
    Inventor: N. Geoffrey Greenberg
  • Sewing thread
    Publication number: 20090308047
    Abstract: An improved sewing thread and method of making it where at least one strand of spun yarn is composed of 100% staple fibers and has a high level of single twist that is equal to or greater than 4 more turns per inch than that of the ply twisted final product.
    Type: Application
    Filed: August 17, 2009
    Publication date: December 17, 2009
    Applicant: American & Efird, Inc.
    Inventor: N. Geoffrey Greenberg
  • Sewing thread
    Patent number: 7594381
    Abstract: An improved sewing thread and method of making it where at least one strand of spun yarn is composed of 100% staple fibers and has a high level of single twist that is equal to or greater than 4 more turns per inch than that of the ply twisted final product.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: September 29, 2009
    Assignee: American & Efird, Inc.
    Inventor: N. Geoffrey Greenberg
  • Processing textile strands
    Patent number: 6014854
    Abstract: Wound bobbins of yarn are exposed to constant tensioning treatment to eliminate variances in hot air shrinkage caused by the manufacturing processes used to make the strands.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 18, 2000
    Assignee: American & Efird, Inc.
    Inventor: N. Geoffrey Greenberg
  • Heat treatment of textile strands prior to plying
    Patent number: 5791135
    Abstract: Wound bobbins of yarn are exposed to a high temperature heat treatment step to eliminate variances in hot air shrinkage caused by the manufacturing processes used to make the strands.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: August 11, 1998
    Assignee: American & Efird, Inc.
    Inventor: N. Geoffrey Greenberg