Patents by Inventor Darryl F. Clark

Darryl F. Clark 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).

  • Crimped multicomponent filaments and spunbond webs made therefrom
    Patent number: 6709996
    Abstract: Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: March 23, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Mark M. Mleziva, Samuel E. Marmon, Christopher C. Creagan, Darryl F. Clark, Kurtis L. Brown
  • Crimped multicomponent filaments and spunbond webs made therefrom
    Publication number: 20020098764
    Abstract: Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.
    Type: Application
    Filed: December 20, 2001
    Publication date: July 25, 2002
    Inventors: Mark M. Mleziva, Samuel E. Marmon, Christopher C. Creagan, Darryl F. Clark, Kurtis L. Brown
  • Crimped multicomponent filaments and spunbond webs made therefrom
    Patent number: 6410138
    Abstract: Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive-is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: June 25, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Mark M. Mleziva, Samuel E. Marmon, Christopher C. Creagan, Darryl F. Clark, Kurtis L. Brown
  • CRIMPED MULTICOMPONENT FILAMENTS AND SPUNBOND WEBS MADE THEREFROM
    Publication number: 20010014395
    Abstract: Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.
    Type: Application
    Filed: September 30, 1997
    Publication date: August 16, 2001
    Inventors: MARK M. MLEZIVA, SAMUEL E. MARMON, CHRISTOPHER C. CREAGAN, DARRYL F. CLARK, KURTIS L. BROWN